./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/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 da295a433f96a090e97fd0ee72a58f7ad7a804da074c3950d4e4dc7d412af0ef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:42,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:42,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:43,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:43,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:43,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:43,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:43,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:43,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:43,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:43,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:43,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:43,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:43,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:43,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:43,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:43,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:43,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:43,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:43,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:43,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:43,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:43,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:43,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:43,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:43,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:43,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:43,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:43,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:43,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:43,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:43,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:43,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:43,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:43,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:43,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:43,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:43,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:43,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:43,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:43,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:43,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:46:43,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:43,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:43,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:43,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:43,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:43,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:43,154 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:43,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:43,155 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:43,155 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:46:43,155 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:43,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:43,156 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:46:43,156 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:46:43,156 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:43,156 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:46:43,157 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:46:43,157 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:46:43,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:43,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:46:43,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:43,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:46:43,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:43,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:46:43,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:46:43,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:43,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:46:43,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:43,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:43,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:43,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:43,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:43,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:46:43,161 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:46:43,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:46:43,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:46:43,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:43,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:43,162 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da295a433f96a090e97fd0ee72a58f7ad7a804da074c3950d4e4dc7d412af0ef [2021-11-21 01:46:43,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:43,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:43,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:43,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:43,431 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:43,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2021-11-21 01:46:43,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/data/54e98fe77/d804de14c2ab4e8fa9801fe290978724/FLAG47c473e44 [2021-11-21 01:46:44,401 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:44,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2021-11-21 01:46:44,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/data/54e98fe77/d804de14c2ab4e8fa9801fe290978724/FLAG47c473e44 [2021-11-21 01:46:44,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/data/54e98fe77/d804de14c2ab4e8fa9801fe290978724 [2021-11-21 01:46:44,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:44,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:44,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:44,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:44,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:44,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:44" (1/1) ... [2021-11-21 01:46:44,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509da10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:44, skipping insertion in model container [2021-11-21 01:46:44,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:44" (1/1) ... [2021-11-21 01:46:44,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:45,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:47,243 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277615,277628] [2021-11-21 01:46:47,247 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277762,277775] [2021-11-21 01:46:47,248 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277901,277914] [2021-11-21 01:46:47,249 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[278059,278072] [2021-11-21 01:46:47,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:47,367 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:46:47,767 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277615,277628] [2021-11-21 01:46:47,768 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277762,277775] [2021-11-21 01:46:47,768 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277901,277914] [2021-11-21 01:46:47,769 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_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[278059,278072] [2021-11-21 01:46:47,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:48,028 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:46:48,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48 WrapperNode [2021-11-21 01:46:48,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:48,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:48,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:46:48,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:46:48,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,469 INFO L137 Inliner]: procedures = 202, calls = 3694, calls flagged for inlining = 99, calls inlined = 91, statements flattened = 6973 [2021-11-21 01:46:48,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:48,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:46:48,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:46:48,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:46:48,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:46:48,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:46:48,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:46:48,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:46:48,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (1/1) ... [2021-11-21 01:46:48,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:48,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:46:48,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd44ab2-ee83-445a-b8d6-225941d1b4ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:46:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_init [2021-11-21 01:46:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_init [2021-11-21 01:46:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure cit_check_button [2021-11-21 01:46:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_check_button [2021-11-21 01:46:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:46:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:46:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_01_00_05 [2021-11-21 01:46:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_01_00_05 [2021-11-21 01:46:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00_05 [2021-11-21 01:46:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00_05 [2021-11-21 01:46:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure cit_PacketFormat2 [2021-11-21 01:46:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_PacketFormat2 [2021-11-21 01:46:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:46:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:46:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure sd_start [2021-11-21 01:46:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_start [2021-11-21 01:46:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00 [2021-11-21 01:46:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00 [2021-11-21 01:46:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_nego [2021-11-21 01:46:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_nego [2021-11-21 01:46:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_frame_add [2021-11-21 01:46:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_frame_add [2021-11-21 01:46:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model2_Packet1 [2021-11-21 01:46:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model2_Packet1 [2021-11-21 01:46:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:46:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-11-21 01:46:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-11-21 01:46:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:46:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:46:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:46:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-21 01:46:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-21 01:46:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:46:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:46:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:46:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure cit_read_reg [2021-11-21 01:46:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_read_reg [2021-11-21 01:46:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:46:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:46:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:46:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_packet_size [2021-11-21 01:46:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_packet_size [2021-11-21 01:46:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-11-21 01:46:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-11-21 01:46:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-11-21 01:46:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-11-21 01:46:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:46:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:46:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model4_Packet1 [2021-11-21 01:46:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model4_Packet1 [2021-11-21 01:46:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_grab [2021-11-21 01:46:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_grab [2021-11-21 01:46:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:46:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2021-11-21 01:46:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2021-11-21 01:46:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 01:46:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 01:46:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init [2021-11-21 01:46:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init [2021-11-21 01:46:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:46:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-11-21 01:46:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-11-21 01:46:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-11-21 01:46:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-11-21 01:46:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_disconnect [2021-11-21 01:46:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_disconnect [2021-11-21 01:46:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure cit_restart_stream [2021-11-21 01:46:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_restart_stream [2021-11-21 01:46:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:46:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_resume [2021-11-21 01:46:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_resume [2021-11-21 01:46:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:46:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:46:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:46:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:46:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:46:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:46:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:46:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:46:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure cit_write_reg [2021-11-21 01:46:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_write_reg [2021-11-21 01:46:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-21 01:46:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-21 01:46:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stopN [2021-11-21 01:46:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stopN [2021-11-21 01:46:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure sd_s_ctrl [2021-11-21 01:46:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_s_ctrl [2021-11-21 01:46:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_g_ctrl [2021-11-21 01:46:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_g_ctrl [2021-11-21 01:46:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:46:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:46:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stop0 [2021-11-21 01:46:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stop0 [2021-11-21 01:46:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_clock_div [2021-11-21 01:46:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_clock_div [2021-11-21 01:46:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model3_Packet1 [2021-11-21 01:46:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model3_Packet1 [2021-11-21 01:46:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure cit_Packet_Format1 [2021-11-21 01:46:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_Packet_Format1 [2021-11-21 01:46:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init_controls [2021-11-21 01:46:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init_controls [2021-11-21 01:46:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:46:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_FF_04_02 [2021-11-21 01:46:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_FF_04_02 [2021-11-21 01:46:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:46:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:46:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:46:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:46:49,647 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:46:49,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:46:49,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:47:02,189 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:47:02,395 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:47:03,427 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:47:03,428 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:47:03,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:03 BoogieIcfgContainer [2021-11-21 01:47:03,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:47:03,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:47:03,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:47:03,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:47:03,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:44" (1/3) ... [2021-11-21 01:47:03,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351085b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:03, skipping insertion in model container [2021-11-21 01:47:03,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:48" (2/3) ... [2021-11-21 01:47:03,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351085b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:03, skipping insertion in model container [2021-11-21 01:47:03,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:03" (3/3) ... [2021-11-21 01:47:03,447 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2021-11-21 01:47:03,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:47:03,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:47:03,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:47:03,543 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 01:47:03,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:47:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 2449 states, 1187 states have (on average 1.2080876158382476) internal successors, (1434), 1204 states have internal predecessors, (1434), 1213 states have call successors, (1213), 48 states have call predecessors, (1213), 47 states have return successors, (1207), 1200 states have call predecessors, (1207), 1207 states have call successors, (1207) [2021-11-21 01:47:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-21 01:47:03,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:03,687 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2021-11-21 01:47:03,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:03,692 INFO L85 PathProgramCache]: Analyzing trace with hash -628031833, now seen corresponding path program 1 times [2021-11-21 01:47:03,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:03,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649413386] [2021-11-21 01:47:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:03,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-21 01:47:04,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:04,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649413386] [2021-11-21 01:47:04,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649413386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:04,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:04,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:47:04,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723479820] [2021-11-21 01:47:04,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:04,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:47:04,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:47:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:47:04,785 INFO L87 Difference]: Start difference. First operand has 2449 states, 1187 states have (on average 1.2080876158382476) internal successors, (1434), 1204 states have internal predecessors, (1434), 1213 states have call successors, (1213), 48 states have call predecessors, (1213), 47 states have return successors, (1207), 1200 states have call predecessors, (1207), 1207 states have call successors, (1207) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-21 01:47:06,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:09,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:11,259 WARN L515 Checker$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 01:47:13,529 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 01:47:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:14,339 INFO L93 Difference]: Finished difference Result 7181 states and 11328 transitions. [2021-11-21 01:47:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:14,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 104 [2021-11-21 01:47:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:14,554 INFO L225 Difference]: With dead ends: 7181 [2021-11-21 01:47:14,555 INFO L226 Difference]: Without dead ends: 4739 [2021-11-21 01:47:14,592 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 01:47:14,598 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 3692 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3694 SdHoareTripleChecker+Valid, 8414 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:14,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3694 Valid, 8414 Invalid, 368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 356 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2021-11-21 01:47:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2021-11-21 01:47:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 4737. [2021-11-21 01:47:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 2287 states have (on average 1.1967643200699607) internal successors, (2737), 2318 states have internal predecessors, (2737), 2357 states have call successors, (2357), 92 states have call predecessors, (2357), 91 states have return successors, (2356), 2340 states have call predecessors, (2356), 2354 states have call successors, (2356) [2021-11-21 01:47:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 7450 transitions. [2021-11-21 01:47:16,107 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 7450 transitions. Word has length 104 [2021-11-21 01:47:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:16,110 INFO L470 AbstractCegarLoop]: Abstraction has 4737 states and 7450 transitions. [2021-11-21 01:47:16,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-21 01:47:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 7450 transitions. [2021-11-21 01:47:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-21 01:47:16,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:16,135 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:16,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:47:16,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash -796856215, now seen corresponding path program 1 times [2021-11-21 01:47:16,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:16,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338574109] [2021-11-21 01:47:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:16,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-11-21 01:47:16,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:16,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338574109] [2021-11-21 01:47:16,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338574109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:16,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:16,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:47:16,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370536562] [2021-11-21 01:47:16,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:16,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:47:16,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:16,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:47:16,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:47:16,654 INFO L87 Difference]: Start difference. First operand 4737 states and 7450 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 01:47:19,457 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 01:47:21,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:23,713 WARN L515 Checker$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 01:47:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:24,825 INFO L93 Difference]: Finished difference Result 13961 states and 21980 transitions. [2021-11-21 01:47:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:24,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 157 [2021-11-21 01:47:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:24,946 INFO L225 Difference]: With dead ends: 13961 [2021-11-21 01:47:24,946 INFO L226 Difference]: Without dead ends: 9241 [2021-11-21 01:47:25,013 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 01:47:25,016 INFO L933 BasicCegarLoop]: 4787 mSDtfsCounter, 3559 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 8378 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:25,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3560 Valid, 8378 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 364 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2021-11-21 01:47:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9241 states. [2021-11-21 01:47:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9241 to 9230. [2021-11-21 01:47:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 4422 states have (on average 1.1886024423337855) internal successors, (5256), 4488 states have internal predecessors, (5256), 4633 states have call successors, (4633), 174 states have call predecessors, (4633), 173 states have return successors, (4634), 4595 states have call predecessors, (4634), 4630 states have call successors, (4634) [2021-11-21 01:47:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 14523 transitions. [2021-11-21 01:47:27,717 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 14523 transitions. Word has length 157 [2021-11-21 01:47:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:27,718 INFO L470 AbstractCegarLoop]: Abstraction has 9230 states and 14523 transitions. [2021-11-21 01:47:27,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 01:47:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 14523 transitions. [2021-11-21 01:47:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-21 01:47:27,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:27,732 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 5, 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] [2021-11-21 01:47:27,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:47:27,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:27,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1078957536, now seen corresponding path program 1 times [2021-11-21 01:47:27,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:27,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984855454] [2021-11-21 01:47:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:27,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2021-11-21 01:47:28,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:28,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984855454] [2021-11-21 01:47:28,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984855454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:28,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:28,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:47:28,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583496418] [2021-11-21 01:47:28,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:28,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:28,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:28,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:28,286 INFO L87 Difference]: Start difference. First operand 9230 states and 14523 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:47:30,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:32,711 WARN L515 Checker$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 01:47:34,857 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 01:47:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:36,434 INFO L93 Difference]: Finished difference Result 18429 states and 29002 transitions. [2021-11-21 01:47:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:36,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2021-11-21 01:47:36,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:36,680 INFO L225 Difference]: With dead ends: 18429 [2021-11-21 01:47:36,681 INFO L226 Difference]: Without dead ends: 18404 [2021-11-21 01:47:36,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:36,702 INFO L933 BasicCegarLoop]: 4815 mSDtfsCounter, 3711 mSDsluCounter, 8732 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 13220 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:36,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3713 Valid, 13220 Invalid, 502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 499 Invalid, 3 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 01:47:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2021-11-21 01:47:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 18402. [2021-11-21 01:47:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18402 states, 8820 states have (on average 1.1884353741496598) internal successors, (10482), 8946 states have internal predecessors, (10482), 9236 states have call successors, (9236), 345 states have call predecessors, (9236), 344 states have return successors, (9243), 9166 states have call predecessors, (9243), 9233 states have call successors, (9243) [2021-11-21 01:47:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18402 states to 18402 states and 28961 transitions. [2021-11-21 01:47:41,520 INFO L78 Accepts]: Start accepts. Automaton has 18402 states and 28961 transitions. Word has length 147 [2021-11-21 01:47:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:41,521 INFO L470 AbstractCegarLoop]: Abstraction has 18402 states and 28961 transitions. [2021-11-21 01:47:41,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:47:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 18402 states and 28961 transitions. [2021-11-21 01:47:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-21 01:47:41,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:41,549 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 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] [2021-11-21 01:47:41,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:47:41,549 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1661149167, now seen corresponding path program 1 times [2021-11-21 01:47:41,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033191619] [2021-11-21 01:47:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:41,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-11-21 01:47:41,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:41,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033191619] [2021-11-21 01:47:41,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033191619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:41,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:41,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:47:41,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665942378] [2021-11-21 01:47:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:41,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:47:41,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:47:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:47:41,894 INFO L87 Difference]: Start difference. First operand 18402 states and 28961 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 01:47:44,106 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 01:47:46,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:48,479 WARN L515 Checker$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 01:47:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:50,036 INFO L93 Difference]: Finished difference Result 35577 states and 55845 transitions. [2021-11-21 01:47:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:50,037 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 157 [2021-11-21 01:47:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:50,192 INFO L225 Difference]: With dead ends: 35577 [2021-11-21 01:47:50,192 INFO L226 Difference]: Without dead ends: 17192 [2021-11-21 01:47:50,400 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 01:47:50,404 INFO L933 BasicCegarLoop]: 4894 mSDtfsCounter, 3568 mSDsluCounter, 3738 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 8485 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:50,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3570 Valid, 8485 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 3 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 01:47:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17192 states. [2021-11-21 01:47:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17192 to 17175. [2021-11-21 01:47:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17175 states, 8330 states have (on average 1.19015606242497) internal successors, (9914), 8476 states have internal predecessors, (9914), 8470 states have call successors, (8470), 374 states have call predecessors, (8470), 373 states have return successors, (8480), 8385 states have call predecessors, (8480), 8467 states have call successors, (8480) [2021-11-21 01:47:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17175 states to 17175 states and 26864 transitions. [2021-11-21 01:47:55,167 INFO L78 Accepts]: Start accepts. Automaton has 17175 states and 26864 transitions. Word has length 157 [2021-11-21 01:47:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:55,168 INFO L470 AbstractCegarLoop]: Abstraction has 17175 states and 26864 transitions. [2021-11-21 01:47:55,168 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 01:47:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 17175 states and 26864 transitions. [2021-11-21 01:47:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-21 01:47:55,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:55,180 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:55,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:47:55,181 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:55,181 INFO L85 PathProgramCache]: Analyzing trace with hash -572571958, now seen corresponding path program 1 times [2021-11-21 01:47:55,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:55,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438528544] [2021-11-21 01:47:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:55,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-11-21 01:47:55,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:55,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438528544] [2021-11-21 01:47:55,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438528544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:55,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:55,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:47:55,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562269153] [2021-11-21 01:47:55,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:55,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:55,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:55,568 INFO L87 Difference]: Start difference. First operand 17175 states and 26864 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 01:47:57,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:59,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:01,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:04,174 WARN L515 Checker$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 01:48:06,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:08,739 WARN L515 Checker$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 01:48:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:22,062 INFO L93 Difference]: Finished difference Result 52015 states and 81304 transitions. [2021-11-21 01:48:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:48:22,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2021-11-21 01:48:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:22,336 INFO L225 Difference]: With dead ends: 52015 [2021-11-21 01:48:22,337 INFO L226 Difference]: Without dead ends: 34857 [2021-11-21 01:48:22,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:48:22,478 INFO L933 BasicCegarLoop]: 9608 mSDtfsCounter, 7246 mSDsluCounter, 13801 mSDsCounter, 0 mSdLazyCounter, 8038 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7284 SdHoareTripleChecker+Valid, 22678 SdHoareTripleChecker+Invalid, 8093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 8038 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:22,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7284 Valid, 22678 Invalid, 8093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 8038 Invalid, 4 Unknown, 0 Unchecked, 25.0s Time] [2021-11-21 01:48:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34857 states. [2021-11-21 01:48:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34857 to 34811. [2021-11-21 01:48:30,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34811 states, 16959 states have (on average 1.1932307329441594) internal successors, (20236), 17268 states have internal predecessors, (20236), 17067 states have call successors, (17067), 789 states have call predecessors, (17067), 783 states have return successors, (17096), 16879 states have call predecessors, (17096), 17064 states have call successors, (17096) [2021-11-21 01:48:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34811 states to 34811 states and 54399 transitions. [2021-11-21 01:48:30,780 INFO L78 Accepts]: Start accepts. Automaton has 34811 states and 54399 transitions. Word has length 174 [2021-11-21 01:48:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:30,781 INFO L470 AbstractCegarLoop]: Abstraction has 34811 states and 54399 transitions. [2021-11-21 01:48:30,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 01:48:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 34811 states and 54399 transitions. [2021-11-21 01:48:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-21 01:48:30,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:30,796 INFO L514 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 3, 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] [2021-11-21 01:48:30,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:48:30,797 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -667797096, now seen corresponding path program 1 times [2021-11-21 01:48:30,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:30,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276837161] [2021-11-21 01:48:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:30,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-11-21 01:48:31,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:31,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276837161] [2021-11-21 01:48:31,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276837161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:31,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:31,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:31,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861819473] [2021-11-21 01:48:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:31,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:31,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:31,179 INFO L87 Difference]: Start difference. First operand 34811 states and 54399 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:48:33,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:35,538 WARN L515 Checker$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 01:48:38,301 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 01:48:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:40,742 INFO L93 Difference]: Finished difference Result 80765 states and 126123 transitions. [2021-11-21 01:48:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:48:40,742 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 173 [2021-11-21 01:48:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:41,365 INFO L225 Difference]: With dead ends: 80765 [2021-11-21 01:48:41,365 INFO L226 Difference]: Without dead ends: 46301 [2021-11-21 01:48:41,657 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 01:48:41,658 INFO L933 BasicCegarLoop]: 7062 mSDtfsCounter, 3593 mSDsluCounter, 3736 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 10651 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:41,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 10651 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 481 Invalid, 3 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 01:48:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46301 states. [2021-11-21 01:48:53,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46301 to 46272. [2021-11-21 01:48:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46272 states, 22732 states have (on average 1.1983987330635228) internal successors, (27242), 23178 states have internal predecessors, (27242), 22437 states have call successors, (22437), 1110 states have call predecessors, (22437), 1101 states have return successors, (22482), 22161 states have call predecessors, (22482), 22434 states have call successors, (22482) [2021-11-21 01:48:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46272 states to 46272 states and 72161 transitions. [2021-11-21 01:48:53,632 INFO L78 Accepts]: Start accepts. Automaton has 46272 states and 72161 transitions. Word has length 173 [2021-11-21 01:48:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:53,633 INFO L470 AbstractCegarLoop]: Abstraction has 46272 states and 72161 transitions. [2021-11-21 01:48:53,633 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:48:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 46272 states and 72161 transitions. [2021-11-21 01:48:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-21 01:48:53,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:53,659 INFO L514 BasicCegarLoop]: trace histogram [16, 8, 8, 8, 8, 8, 8, 6, 6, 5, 5, 5, 3, 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] [2021-11-21 01:48:53,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:48:53,660 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 884784036, now seen corresponding path program 1 times [2021-11-21 01:48:53,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:53,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872101301] [2021-11-21 01:48:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:53,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-11-21 01:48:53,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:53,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872101301] [2021-11-21 01:48:53,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872101301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:53,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:53,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:48:53,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541250176] [2021-11-21 01:48:53,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:53,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:48:53,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:48:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:48:53,986 INFO L87 Difference]: Start difference. First operand 46272 states and 72161 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:48:56,283 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 01:48:58,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:00,780 WARN L515 Checker$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 01:49:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:04,526 INFO L93 Difference]: Finished difference Result 103557 states and 161387 transitions. [2021-11-21 01:49:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:49:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 194 [2021-11-21 01:49:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:04,960 INFO L225 Difference]: With dead ends: 103557 [2021-11-21 01:49:04,960 INFO L226 Difference]: Without dead ends: 57632 [2021-11-21 01:49:05,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:49:05,487 INFO L933 BasicCegarLoop]: 7061 mSDtfsCounter, 3565 mSDsluCounter, 18423 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3567 SdHoareTripleChecker+Valid, 24774 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:05,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3567 Valid, 24774 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 3 Unknown, 0 Unchecked, 7.5s Time] [2021-11-21 01:49:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57632 states. [2021-11-21 01:49:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57632 to 57583. [2021-11-21 01:49:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57583 states, 28365 states have (on average 1.1989423585404548) internal successors, (34008), 28948 states have internal predecessors, (34008), 27797 states have call successors, (27797), 1421 states have call predecessors, (27797), 1419 states have return successors, (27868), 27443 states have call predecessors, (27868), 27794 states have call successors, (27868) [2021-11-21 01:49:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57583 states to 57583 states and 89673 transitions. [2021-11-21 01:49:18,581 INFO L78 Accepts]: Start accepts. Automaton has 57583 states and 89673 transitions. Word has length 194 [2021-11-21 01:49:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:18,583 INFO L470 AbstractCegarLoop]: Abstraction has 57583 states and 89673 transitions. [2021-11-21 01:49:18,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:49:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 57583 states and 89673 transitions. [2021-11-21 01:49:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-21 01:49:18,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:18,612 INFO L514 BasicCegarLoop]: trace histogram [16, 8, 8, 8, 8, 8, 8, 6, 6, 5, 5, 5, 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] [2021-11-21 01:49:18,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:49:18,612 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:49:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1309303610, now seen corresponding path program 1 times [2021-11-21 01:49:18,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:18,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684123810] [2021-11-21 01:49:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:18,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2021-11-21 01:49:18,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:18,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684123810] [2021-11-21 01:49:18,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684123810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:18,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:18,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:49:18,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389654047] [2021-11-21 01:49:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:18,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:49:18,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:49:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:18,924 INFO L87 Difference]: Start difference. First operand 57583 states and 89673 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:49:21,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:23,294 WARN L515 Checker$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 01:49:25,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:27,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:32,195 INFO L93 Difference]: Finished difference Result 170231 states and 265393 transitions. [2021-11-21 01:49:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:49:32,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 196 [2021-11-21 01:49:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:33,255 INFO L225 Difference]: With dead ends: 170231 [2021-11-21 01:49:33,255 INFO L226 Difference]: Without dead ends: 112995 [2021-11-21 01:49:33,838 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 01:49:33,839 INFO L933 BasicCegarLoop]: 6962 mSDtfsCounter, 3646 mSDsluCounter, 3753 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3648 SdHoareTripleChecker+Valid, 10558 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:33,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3648 Valid, 10558 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 470 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2021-11-21 01:49:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112995 states. [2021-11-21 01:49:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112995 to 112993. [2021-11-21 01:49:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112993 states, 55531 states have (on average 1.1959446075165223) internal successors, (66412), 56546 states have internal predecessors, (66412), 54773 states have call successors, (54773), 2679 states have call predecessors, (54773), 2687 states have return successors, (54918), 54223 states have call predecessors, (54918), 54770 states have call successors, (54918)