./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-net-wireless-ipw2x00-ipw2100.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_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/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_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/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_260563da-17c3-40a8-952e-c108b0338993/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 3b1986f893b92b583df635a6037935ebceab765520aec8f1f2d3a2b6ea37b26f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:59:32,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:59:32,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:59:32,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:59:32,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:59:32,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:59:32,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:59:32,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:59:32,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:59:32,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:59:32,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:59:32,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:59:32,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:59:32,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:59:32,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:59:32,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:59:32,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:59:32,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:59:32,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:59:32,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:59:32,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:59:32,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:59:32,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:59:32,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:59:32,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:59:32,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:59:32,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:59:32,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:59:32,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:59:32,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:59:32,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:59:32,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:59:32,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:59:32,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:59:32,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:59:32,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:59:32,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:59:32,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:59:32,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:59:32,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:59:32,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:59:32,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:59:32,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:59:32,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:59:32,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:59:32,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:59:32,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:59:32,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:59:32,138 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:59:32,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:59:32,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:59:32,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:59:32,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:59:32,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:59:32,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:59:32,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:59:32,140 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:59:32,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:59:32,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:59:32,141 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:59:32,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:59:32,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:59:32,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:59:32,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:59:32,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:59:32,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:59:32,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:59:32,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:59:32,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:59:32,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:59:32,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:59:32,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:59:32,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:59:32,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:59:32,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:59:32,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:59:32,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:59:32,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:59:32,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:59:32,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:59:32,147 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_260563da-17c3-40a8-952e-c108b0338993/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b1986f893b92b583df635a6037935ebceab765520aec8f1f2d3a2b6ea37b26f [2021-11-21 01:59:32,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:59:32,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:59:32,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:59:32,510 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:59:32,510 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:59:32,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-21 01:59:32,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/data/563bc812a/61e4adcf8c9f483693f687f59f156668/FLAGd59a49862 [2021-11-21 01:59:33,827 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:59:33,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-21 01:59:33,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/data/563bc812a/61e4adcf8c9f483693f687f59f156668/FLAGd59a49862 [2021-11-21 01:59:34,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/data/563bc812a/61e4adcf8c9f483693f687f59f156668 [2021-11-21 01:59:34,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:59:34,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:59:34,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:59:34,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:59:34,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:59:34,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:34" (1/1) ... [2021-11-21 01:59:34,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a39c699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:34, skipping insertion in model container [2021-11-21 01:59:34,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:34" (1/1) ... [2021-11-21 01:59:34,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:59:34,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:59:41,805 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749649,749662] [2021-11-21 01:59:41,809 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749796,749809] [2021-11-21 01:59:41,810 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749935,749948] [2021-11-21 01:59:41,811 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[750093,750106] [2021-11-21 01:59:41,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:59:41,956 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:59:42,794 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749649,749662] [2021-11-21 01:59:42,794 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749796,749809] [2021-11-21 01:59:42,795 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749935,749948] [2021-11-21 01:59:42,795 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_260563da-17c3-40a8-952e-c108b0338993/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[750093,750106] [2021-11-21 01:59:42,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:59:43,182 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:59:43,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43 WrapperNode [2021-11-21 01:59:43,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:59:43,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:59:43,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:59:43,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:59:43,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:43,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:43,830 INFO L137 Inliner]: procedures = 617, calls = 11504, calls flagged for inlining = 310, calls inlined = 246, statements flattened = 12799 [2021-11-21 01:59:43,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:59:43,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:59:43,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:59:43,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:59:43,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:43,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:43,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:43,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:44,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:44,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:44,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:44,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:59:44,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:59:44,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:59:44,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:59:44,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (1/1) ... [2021-11-21 01:59:44,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:59:44,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:44,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:59:44,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:59:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:59:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:59:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:59:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:59:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-21 01:59:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-21 01:59:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-21 01:59:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-21 01:59:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-21 01:59:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-21 01:59:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:59:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:59:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:59:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:59:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-21 01:59:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-21 01:59:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-21 01:59:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-21 01:59:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-21 01:59:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-21 01:59:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:59:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:59:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:59:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:59:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-21 01:59:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-21 01:59:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-21 01:59:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-21 01:59:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:59:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:59:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:59:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:59:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:59:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:59:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:59:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:59:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:59:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:59:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:59:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:59:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-21 01:59:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-21 01:59:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:59:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:59:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:59:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:59:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-21 01:59:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-21 01:59:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-21 01:59:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-21 01:59:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-21 01:59:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-21 01:59:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:59:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:59:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:59:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-21 01:59:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-21 01:59:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:59:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:59:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-21 01:59:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-21 01:59:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:59:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:59:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-21 01:59:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-21 01:59:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-21 01:59:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-21 01:59:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:59:44,949 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:59:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-21 01:59:44,950 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-21 01:59:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:59:44,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:59:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-21 01:59:44,950 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-21 01:59:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:59:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:59:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:59:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:59:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:59:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:59:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-21 01:59:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-21 01:59:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:59:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:59:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-21 01:59:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-21 01:59:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:59:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:59:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:59:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-21 01:59:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-21 01:59:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-21 01:59:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-21 01:59:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:59:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:59:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:59:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:59:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:59:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:59:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:59:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:59:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-21 01:59:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-21 01:59:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:59:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:59:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:59:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:59:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-21 01:59:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-21 01:59:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:59:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:59:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-21 01:59:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-21 01:59:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-21 01:59:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-21 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-21 01:59:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-21 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:59:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:59:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:59:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-21 01:59:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-21 01:59:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:59:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:59:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-21 01:59:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-21 01:59:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:59:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:59:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:59:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 01:59:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 01:59:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:59:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-21 01:59:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-21 01:59:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:59:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:59:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-21 01:59:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-21 01:59:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:59:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:59:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-21 01:59:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-21 01:59:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:59:44,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:59:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:59:44,977 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:59:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-21 01:59:44,977 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-21 01:59:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-21 01:59:44,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-21 01:59:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-21 01:59:44,978 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-21 01:59:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-21 01:59:44,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-21 01:59:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-21 01:59:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-21 01:59:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:59:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:59:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-21 01:59:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-21 01:59:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-21 01:59:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-21 01:59:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-21 01:59:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-21 01:59:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 01:59:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 01:59:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:59:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:59:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:59:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:59:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-21 01:59:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-21 01:59:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 01:59:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 01:59:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-21 01:59:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-21 01:59:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-21 01:59:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-21 01:59:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-21 01:59:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-21 01:59:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-21 01:59:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-21 01:59:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:59:44,983 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:59:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-21 01:59:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-21 01:59:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-21 01:59:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-21 01:59:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-21 01:59:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-21 01:59:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-21 01:59:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-21 01:59:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:59:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:59:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:59:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:59:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-21 01:59:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-21 01:59:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-21 01:59:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-21 01:59:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:59:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:59:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:59:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:59:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:59:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:59:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-21 01:59:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-21 01:59:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:59:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:59:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-21 01:59:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-21 01:59:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:59:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:59:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:59:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:59:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:59:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-21 01:59:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-21 01:59:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:59:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:59:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-21 01:59:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-21 01:59:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:59:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-21 01:59:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-21 01:59:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-21 01:59:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-21 01:59:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-21 01:59:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-21 01:59:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-21 01:59:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-21 01:59:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-21 01:59:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-21 01:59:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-21 01:59:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-21 01:59:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:59:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-21 01:59:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-21 01:59:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 01:59:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 01:59:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:59:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:59:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-21 01:59:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-21 01:59:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-21 01:59:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-21 01:59:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:59:44,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:59:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:59:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:59:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-21 01:59:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-21 01:59:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:59:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:59:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:59:45,012 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:59:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:59:45,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:59:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-21 01:59:45,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-21 01:59:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-21 01:59:45,013 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-21 01:59:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-21 01:59:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-21 01:59:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-21 01:59:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-21 01:59:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-21 01:59:45,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-21 01:59:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:59:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:59:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-21 01:59:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-21 01:59:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:59:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:59:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-21 01:59:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-21 01:59:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-21 01:59:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-21 01:59:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-21 01:59:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-21 01:59:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-21 01:59:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-21 01:59:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:59:45,017 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:59:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:59:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-21 01:59:45,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-21 01:59:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:59:45,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:59:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-21 01:59:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-21 01:59:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-21 01:59:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-21 01:59:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:59:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:59:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-21 01:59:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-21 01:59:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:59:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:59:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-21 01:59:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-21 01:59:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:59:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:59:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:59:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:59:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-21 01:59:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-21 01:59:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:59:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:59:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:59:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:59:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 01:59:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 01:59:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:59:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:59:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-21 01:59:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-21 01:59:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-21 01:59:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-21 01:59:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:59:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:59:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-21 01:59:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-21 01:59:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 01:59:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-21 01:59:45,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-21 01:59:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-21 01:59:45,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-21 01:59:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:59:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-21 01:59:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-21 01:59:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-21 01:59:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-21 01:59:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:59:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:59:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:59:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:59:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-21 01:59:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-21 01:59:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-21 01:59:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-21 01:59:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-21 01:59:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-21 01:59:46,487 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:59:46,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 02:00:00,957 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 02:02:18,294 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 02:02:18,429 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 02:02:23,151 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 02:02:23,151 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 02:02:23,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:23 BoogieIcfgContainer [2021-11-21 02:02:23,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 02:02:23,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 02:02:23,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 02:02:23,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 02:02:23,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:59:34" (1/3) ... [2021-11-21 02:02:23,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aaa57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:23, skipping insertion in model container [2021-11-21 02:02:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:43" (2/3) ... [2021-11-21 02:02:23,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aaa57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:23, skipping insertion in model container [2021-11-21 02:02:23,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:23" (3/3) ... [2021-11-21 02:02:23,170 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-21 02:02:23,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 02:02:23,175 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 02:02:23,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 02:02:23,276 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 02:02:23,276 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 02:02:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 2804 states, 1764 states have (on average 1.3395691609977325) internal successors, (2363), 1780 states have internal predecessors, (2363), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) [2021-11-21 02:02:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-21 02:02:23,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:02:23,402 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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] [2021-11-21 02:02:23,404 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 02:02:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:02:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1023817224, now seen corresponding path program 1 times [2021-11-21 02:02:23,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:02:23,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365426659] [2021-11-21 02:02:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:02:23,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:02:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:02:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-21 02:02:24,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:02:24,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365426659] [2021-11-21 02:02:24,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365426659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:02:24,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:02:24,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:02:24,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290672771] [2021-11-21 02:02:24,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:02:24,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:02:24,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:02:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:02:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:02:25,010 INFO L87 Difference]: Start difference. First operand has 2804 states, 1764 states have (on average 1.3395691609977325) internal successors, (2363), 1780 states have internal predecessors, (2363), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 02:02:30,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:33,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:40,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:44,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:47,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:49,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:51,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:53,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:56,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:56,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:02:56,305 INFO L93 Difference]: Finished difference Result 7899 states and 11569 transitions. [2021-11-21 02:02:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:02:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 184 [2021-11-21 02:02:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:02:56,375 INFO L225 Difference]: With dead ends: 7899 [2021-11-21 02:02:56,375 INFO L226 Difference]: Without dead ends: 5118 [2021-11-21 02:02:56,407 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 02:02:56,417 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 3398 mSDsluCounter, 4026 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 14 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 7849 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:02:56,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3401 Valid, 7849 Invalid, 1055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 1032 Invalid, 9 Unknown, 0 Unchecked, 30.8s Time] [2021-11-21 02:02:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-11-21 02:02:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5115. [2021-11-21 02:02:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 3219 states have (on average 1.3317800559179869) internal successors, (4287), 3251 states have internal predecessors, (4287), 1583 states have call successors, (1583), 312 states have call predecessors, (1583), 311 states have return successors, (1583), 1575 states have call predecessors, (1583), 1580 states have call successors, (1583) [2021-11-21 02:02:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7453 transitions. [2021-11-21 02:02:56,920 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7453 transitions. Word has length 184 [2021-11-21 02:02:56,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:02:56,924 INFO L470 AbstractCegarLoop]: Abstraction has 5115 states and 7453 transitions. [2021-11-21 02:02:56,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 02:02:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7453 transitions. [2021-11-21 02:02:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-21 02:02:56,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:02:56,937 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:56,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 02:02:56,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:02:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:02:56,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1220244726, now seen corresponding path program 1 times [2021-11-21 02:02:56,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:02:56,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373040571] [2021-11-21 02:02:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:02:56,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:02:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:02:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-21 02:02:57,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:02:57,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373040571] [2021-11-21 02:02:57,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373040571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:02:57,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:02:57,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:02:57,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155097025] [2021-11-21 02:02:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:02:57,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:02:57,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:02:57,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:02:57,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:02:57,762 INFO L87 Difference]: Start difference. First operand 5115 states and 7453 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 02:03:02,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:06,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:03:08,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:11,169 WARN L515 Checker$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 02:03:13,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:18,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:22,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:24,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:27,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:29,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:31,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:33,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:03:34,060 INFO L93 Difference]: Finished difference Result 11110 states and 16189 transitions. [2021-11-21 02:03:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:03:34,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 198 [2021-11-21 02:03:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:03:34,116 INFO L225 Difference]: With dead ends: 11110 [2021-11-21 02:03:34,116 INFO L226 Difference]: Without dead ends: 6028 [2021-11-21 02:03:34,148 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 02:03:34,149 INFO L933 BasicCegarLoop]: 4171 mSDtfsCounter, 2283 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 17 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 7708 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:03:34,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2287 Valid, 7708 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1057 Invalid, 12 Unknown, 0 Unchecked, 36.0s Time] [2021-11-21 02:03:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2021-11-21 02:03:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 6011. [2021-11-21 02:03:34,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 3844 states have (on average 1.3384495317377731) internal successors, (5145), 3876 states have internal predecessors, (5145), 1797 states have call successors, (1797), 370 states have call predecessors, (1797), 368 states have return successors, (1797), 1782 states have call predecessors, (1797), 1794 states have call successors, (1797) [2021-11-21 02:03:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 8739 transitions. [2021-11-21 02:03:34,551 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 8739 transitions. Word has length 198 [2021-11-21 02:03:34,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:03:34,553 INFO L470 AbstractCegarLoop]: Abstraction has 6011 states and 8739 transitions. [2021-11-21 02:03:34,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 02:03:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 8739 transitions. [2021-11-21 02:03:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-21 02:03:34,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:03:34,563 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1, 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 02:03:34,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 02:03:34,564 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 02:03:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:03:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash 60308413, now seen corresponding path program 1 times [2021-11-21 02:03:34,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:03:34,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018443225] [2021-11-21 02:03:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:34,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:03:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-11-21 02:03:35,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:03:35,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018443225] [2021-11-21 02:03:35,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018443225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:03:35,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:03:35,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 02:03:35,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903853125] [2021-11-21 02:03:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:03:35,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 02:03:35,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:03:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 02:03:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:03:35,799 INFO L87 Difference]: Start difference. First operand 6011 states and 8739 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 02:03:39,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:41,917 WARN L515 Checker$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 02:03:46,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:03:49,652 WARN L515 Checker$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 02:03:52,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:54,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:55,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:59,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:03,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:05,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:08,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:11,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:13,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:15,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:16,069 INFO L93 Difference]: Finished difference Result 11603 states and 16847 transitions. [2021-11-21 02:04:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 02:04:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 231 [2021-11-21 02:04:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:16,174 INFO L225 Difference]: With dead ends: 11603 [2021-11-21 02:04:16,174 INFO L226 Difference]: Without dead ends: 11580 [2021-11-21 02:04:16,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:04:16,186 INFO L933 BasicCegarLoop]: 4314 mSDtfsCounter, 3430 mSDsluCounter, 8826 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3435 SdHoareTripleChecker+Valid, 12151 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:16,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3435 Valid, 12151 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1492 Invalid, 11 Unknown, 0 Unchecked, 39.9s Time] [2021-11-21 02:04:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11580 states. [2021-11-21 02:04:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11580 to 11575. [2021-11-21 02:04:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11575 states, 7405 states have (on average 1.336934503713707) internal successors, (9900), 7464 states have internal predecessors, (9900), 3449 states have call successors, (3449), 721 states have call predecessors, (3449), 719 states have return successors, (3455), 3425 states have call predecessors, (3455), 3446 states have call successors, (3455) [2021-11-21 02:04:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11575 states to 11575 states and 16804 transitions. [2021-11-21 02:04:16,916 INFO L78 Accepts]: Start accepts. Automaton has 11575 states and 16804 transitions. Word has length 231 [2021-11-21 02:04:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:16,917 INFO L470 AbstractCegarLoop]: Abstraction has 11575 states and 16804 transitions. [2021-11-21 02:04:16,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 02:04:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 11575 states and 16804 transitions. [2021-11-21 02:04:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-21 02:04:16,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:16,934 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:04:16,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 02:04:16,935 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 02:04:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash 813568829, now seen corresponding path program 1 times [2021-11-21 02:04:16,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:16,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164288932] [2021-11-21 02:04:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:16,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-21 02:04:17,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:17,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164288932] [2021-11-21 02:04:17,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164288932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:17,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:17,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:04:17,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859337880] [2021-11-21 02:04:17,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:17,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:04:17,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:04:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:04:17,727 INFO L87 Difference]: Start difference. First operand 11575 states and 16804 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 02:04:25,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:28,532 WARN L515 Checker$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 02:04:30,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:33,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:37,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:39,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:42,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:44,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:47,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:49,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:04:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:04:49,463 INFO L93 Difference]: Finished difference Result 29263 states and 42498 transitions. [2021-11-21 02:04:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:04:49,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 247 [2021-11-21 02:04:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:04:49,575 INFO L225 Difference]: With dead ends: 29263 [2021-11-21 02:04:49,575 INFO L226 Difference]: Without dead ends: 17721 [2021-11-21 02:04:49,635 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 02:04:49,636 INFO L933 BasicCegarLoop]: 4327 mSDtfsCounter, 3394 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 5 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 7894 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2021-11-21 02:04:49,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3397 Valid, 7894 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1006 Invalid, 9 Unknown, 0 Unchecked, 31.1s Time] [2021-11-21 02:04:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2021-11-21 02:04:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 17703. [2021-11-21 02:04:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17703 states, 11259 states have (on average 1.3343991473487877) internal successors, (15024), 11368 states have internal predecessors, (15024), 5334 states have call successors, (5334), 1111 states have call predecessors, (5334), 1108 states have return successors, (5349), 5286 states have call predecessors, (5349), 5331 states have call successors, (5349) [2021-11-21 02:04:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17703 states to 17703 states and 25707 transitions. [2021-11-21 02:04:50,777 INFO L78 Accepts]: Start accepts. Automaton has 17703 states and 25707 transitions. Word has length 247 [2021-11-21 02:04:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:04:50,778 INFO L470 AbstractCegarLoop]: Abstraction has 17703 states and 25707 transitions. [2021-11-21 02:04:50,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 02:04:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 17703 states and 25707 transitions. [2021-11-21 02:04:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-21 02:04:50,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:04:50,797 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:04:50,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 02:04:50,797 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:04:50,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:04:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash -876851377, now seen corresponding path program 1 times [2021-11-21 02:04:50,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:04:50,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633681857] [2021-11-21 02:04:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:04:50,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:04:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:04:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2021-11-21 02:04:51,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:04:51,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633681857] [2021-11-21 02:04:51,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633681857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:04:51,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:04:51,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:04:51,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4622470] [2021-11-21 02:04:51,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:04:51,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:04:51,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:04:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:04:51,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:04:51,648 INFO L87 Difference]: Start difference. First operand 17703 states and 25707 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-21 02:04:57,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:05:00,373 WARN L515 Checker$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 02:05:03,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:06,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:08,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:10,533 WARN L515 Checker$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 02:05:14,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:17,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:20,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:22,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:24,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:26,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:29,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:29,645 INFO L93 Difference]: Finished difference Result 40232 states and 58473 transitions. [2021-11-21 02:05:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:05:29,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 251 [2021-11-21 02:05:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:29,773 INFO L225 Difference]: With dead ends: 40232 [2021-11-21 02:05:29,773 INFO L226 Difference]: Without dead ends: 24169 [2021-11-21 02:05:29,918 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 02:05:29,920 INFO L933 BasicCegarLoop]: 5532 mSDtfsCounter, 2346 mSDsluCounter, 4015 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 15 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 9067 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:29,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 9067 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1347 Invalid, 10 Unknown, 0 Unchecked, 37.5s Time] [2021-11-21 02:05:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24169 states. [2021-11-21 02:05:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24169 to 24156. [2021-11-21 02:05:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24156 states, 15429 states have (on average 1.3353425367813856) internal successors, (20603), 15564 states have internal predecessors, (20603), 7213 states have call successors, (7213), 1517 states have call predecessors, (7213), 1512 states have return successors, (7232), 7149 states have call predecessors, (7232), 7210 states have call successors, (7232) [2021-11-21 02:05:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24156 states to 24156 states and 35048 transitions. [2021-11-21 02:05:31,286 INFO L78 Accepts]: Start accepts. Automaton has 24156 states and 35048 transitions. Word has length 251 [2021-11-21 02:05:31,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:31,288 INFO L470 AbstractCegarLoop]: Abstraction has 24156 states and 35048 transitions. [2021-11-21 02:05:31,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-21 02:05:31,288 INFO L276 IsEmpty]: Start isEmpty. Operand 24156 states and 35048 transitions. [2021-11-21 02:05:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-21 02:05:31,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:31,319 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:05:31,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 02:05:31,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:05:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash 450594115, now seen corresponding path program 1 times [2021-11-21 02:05:31,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:31,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120850268] [2021-11-21 02:05:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:31,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2021-11-21 02:05:32,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120850268] [2021-11-21 02:05:32,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120850268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:32,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:05:32,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 02:05:32,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367938679] [2021-11-21 02:05:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:32,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 02:05:32,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 02:05:32,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 02:05:32,339 INFO L87 Difference]: Start difference. First operand 24156 states and 35048 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 02:05:37,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:05:40,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:42,438 WARN L515 Checker$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 02:05:46,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:51,625 WARN L515 Checker$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 02:05:54,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:05:57,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:01,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:05,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:07,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:10,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:12,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:14,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:06:16,508 INFO L93 Difference]: Finished difference Result 29036 states and 42828 transitions. [2021-11-21 02:06:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 02:06:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 313 [2021-11-21 02:06:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:06:16,657 INFO L225 Difference]: With dead ends: 29036 [2021-11-21 02:06:16,657 INFO L226 Difference]: Without dead ends: 29034 [2021-11-21 02:06:16,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:06:16,677 INFO L933 BasicCegarLoop]: 5464 mSDtfsCounter, 4640 mSDsluCounter, 10351 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 209 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4854 SdHoareTripleChecker+Valid, 14639 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.4s IncrementalHoareTripleChecker+Time [2021-11-21 02:06:16,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4854 Valid, 14639 Invalid, 2299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [209 Valid, 2078 Invalid, 12 Unknown, 0 Unchecked, 43.4s Time] [2021-11-21 02:06:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29034 states. [2021-11-21 02:06:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29034 to 24426. [2021-11-21 02:06:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24426 states, 15587 states have (on average 1.3346378392249951) internal successors, (20803), 15734 states have internal predecessors, (20803), 7277 states have call successors, (7277), 1563 states have call predecessors, (7277), 1560 states have return successors, (7298), 7203 states have call predecessors, (7298), 7274 states have call successors, (7298) [2021-11-21 02:06:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24426 states to 24426 states and 35378 transitions. [2021-11-21 02:06:18,228 INFO L78 Accepts]: Start accepts. Automaton has 24426 states and 35378 transitions. Word has length 313 [2021-11-21 02:06:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:06:18,229 INFO L470 AbstractCegarLoop]: Abstraction has 24426 states and 35378 transitions. [2021-11-21 02:06:18,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 02:06:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24426 states and 35378 transitions. [2021-11-21 02:06:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-21 02:06:18,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:06:18,263 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:18,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 02:06:18,263 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 02:06:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:06:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1106464439, now seen corresponding path program 1 times [2021-11-21 02:06:18,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:06:18,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302683816] [2021-11-21 02:06:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:06:18,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:06:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:06:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2021-11-21 02:06:18,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:06:18,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302683816] [2021-11-21 02:06:18,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302683816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:06:18,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:06:18,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:06:18,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901995455] [2021-11-21 02:06:18,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:06:18,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:06:18,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:06:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:06:18,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:06:18,882 INFO L87 Difference]: Start difference. First operand 24426 states and 35378 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 02:06:23,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:06:26,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:06:29,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:31,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:35,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:38,312 WARN L515 Checker$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 02:06:40,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:44,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:47,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:50,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:53,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:55,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:57,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:06:59,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:07:00,575 INFO L93 Difference]: Finished difference Result 58074 states and 84129 transitions. [2021-11-21 02:07:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:07:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 306 [2021-11-21 02:07:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:07:00,814 INFO L225 Difference]: With dead ends: 58074 [2021-11-21 02:07:00,814 INFO L226 Difference]: Without dead ends: 35288 [2021-11-21 02:07:00,893 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 02:07:00,894 INFO L933 BasicCegarLoop]: 6475 mSDtfsCounter, 3322 mSDsluCounter, 4052 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 4 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 10040 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2021-11-21 02:07:00,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 10040 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1434 Invalid, 13 Unknown, 0 Unchecked, 40.6s Time] [2021-11-21 02:07:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35288 states. [2021-11-21 02:07:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35288 to 35264. [2021-11-21 02:07:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35264 states, 22493 states have (on average 1.3345929844840616) internal successors, (30019), 22711 states have internal predecessors, (30019), 10503 states have call successors, (10503), 2276 states have call predecessors, (10503), 2266 states have return successors, (10537), 10387 states have call predecessors, (10537), 10500 states have call successors, (10537) [2021-11-21 02:07:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35264 states to 35264 states and 51059 transitions. [2021-11-21 02:07:02,626 INFO L78 Accepts]: Start accepts. Automaton has 35264 states and 51059 transitions. Word has length 306 [2021-11-21 02:07:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:07:02,627 INFO L470 AbstractCegarLoop]: Abstraction has 35264 states and 51059 transitions. [2021-11-21 02:07:02,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 02:07:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 35264 states and 51059 transitions. [2021-11-21 02:07:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-21 02:07:02,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:07:02,681 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:02,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 02:07:02,681 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 02:07:02,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:07:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2091249986, now seen corresponding path program 1 times [2021-11-21 02:07:02,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:07:02,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734558745] [2021-11-21 02:07:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:07:02,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:07:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:07:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2021-11-21 02:07:03,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:07:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734558745] [2021-11-21 02:07:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734558745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:07:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213760140] [2021-11-21 02:07:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:07:03,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:07:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:07:03,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:07:03,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 02:07:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:07:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 14005 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 02:07:06,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:07:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2021-11-21 02:07:08,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 02:07:08,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213760140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:07:08,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 02:07:08,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-21 02:07:08,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913281320] [2021-11-21 02:07:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:07:08,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:07:08,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:07:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:07:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:07:08,198 INFO L87 Difference]: Start difference. First operand 35264 states and 51059 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 02:07:13,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:16,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:21,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:25,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:28,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:31,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:33,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:36,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:38,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:40,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:07:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:07:41,506 INFO L93 Difference]: Finished difference Result 101309 states and 146735 transitions. [2021-11-21 02:07:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:07:41,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 331 [2021-11-21 02:07:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:07:41,921 INFO L225 Difference]: With dead ends: 101309 [2021-11-21 02:07:41,921 INFO L226 Difference]: Without dead ends: 67685 [2021-11-21 02:07:42,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:07:42,005 INFO L933 BasicCegarLoop]: 4284 mSDtfsCounter, 3357 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 14 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:07:42,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3360 Valid, 7801 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1027 Invalid, 10 Unknown, 0 Unchecked, 31.8s Time] [2021-11-21 02:07:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67685 states. [2021-11-21 02:07:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67685 to 67678. [2021-11-21 02:07:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67678 states, 43281 states have (on average 1.334211316744068) internal successors, (57746), 43649 states have internal predecessors, (57746), 20040 states have call successors, (20040), 4368 states have call predecessors, (20040), 4355 states have return successors, (20113), 19879 states have call predecessors, (20113), 20037 states have call successors, (20113) [2021-11-21 02:07:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67678 states to 67678 states and 97899 transitions. [2021-11-21 02:07:45,325 INFO L78 Accepts]: Start accepts. Automaton has 67678 states and 97899 transitions. Word has length 331 [2021-11-21 02:07:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:07:45,326 INFO L470 AbstractCegarLoop]: Abstraction has 67678 states and 97899 transitions. [2021-11-21 02:07:45,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 02:07:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 67678 states and 97899 transitions. [2021-11-21 02:07:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-21 02:07:45,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:07:45,400 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:07:45,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 02:07:45,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:07:45,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:07:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:07:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2068858621, now seen corresponding path program 1 times [2021-11-21 02:07:45,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:07:45,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967412623] [2021-11-21 02:07:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:07:45,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:07:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:07:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2021-11-21 02:07:46,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:07:46,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967412623] [2021-11-21 02:07:46,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967412623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:07:46,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:07:46,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:07:46,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300227659] [2021-11-21 02:07:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:07:46,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:07:46,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:07:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:07:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:07:46,575 INFO L87 Difference]: Start difference. First operand 67678 states and 97899 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 02:07:52,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:07:55,521 WARN L515 Checker$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 02:07:59,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:02,755 WARN L515 Checker$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 02:08:04,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:08,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:12,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:15,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:17,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:20,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:22,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:24,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:08:25,859 INFO L93 Difference]: Finished difference Result 155250 states and 224543 transitions. [2021-11-21 02:08:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:08:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 333 [2021-11-21 02:08:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:08:26,365 INFO L225 Difference]: With dead ends: 155250 [2021-11-21 02:08:26,365 INFO L226 Difference]: Without dead ends: 89212 [2021-11-21 02:08:26,511 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 02:08:26,512 INFO L933 BasicCegarLoop]: 6462 mSDtfsCounter, 3320 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 10007 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:08:26,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3323 Valid, 10007 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1458 Invalid, 9 Unknown, 0 Unchecked, 36.8s Time] [2021-11-21 02:08:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89212 states. [2021-11-21 02:08:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89212 to 89209. [2021-11-21 02:08:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89209 states, 57077 states have (on average 1.3336895772377666) internal successors, (76123), 57543 states have internal predecessors, (76123), 26381 states have call successors, (26381), 5766 states have call predecessors, (26381), 5749 states have return successors, (26480), 26190 states have call predecessors, (26480), 26378 states have call successors, (26480) [2021-11-21 02:08:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89209 states to 89209 states and 128984 transitions. [2021-11-21 02:08:30,483 INFO L78 Accepts]: Start accepts. Automaton has 89209 states and 128984 transitions. Word has length 333 [2021-11-21 02:08:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:08:30,484 INFO L470 AbstractCegarLoop]: Abstraction has 89209 states and 128984 transitions. [2021-11-21 02:08:30,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 02:08:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 89209 states and 128984 transitions. [2021-11-21 02:08:30,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-21 02:08:30,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:08:30,530 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 6, 6, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:30,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 02:08:30,531 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:08:30,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:08:30,531 INFO L85 PathProgramCache]: Analyzing trace with hash 3937192, now seen corresponding path program 1 times [2021-11-21 02:08:30,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:08:30,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073058774] [2021-11-21 02:08:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:08:30,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:08:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:08:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2021-11-21 02:08:31,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:08:31,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073058774] [2021-11-21 02:08:31,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073058774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:08:31,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478500488] [2021-11-21 02:08:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:08:31,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:08:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:08:31,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:08:31,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 02:08:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:08:34,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 14106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 02:08:34,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:08:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2021-11-21 02:08:35,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 02:08:35,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478500488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:08:35,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 02:08:35,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-21 02:08:35,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574988182] [2021-11-21 02:08:35,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:08:35,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:08:35,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:08:35,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:08:35,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:08:35,911 INFO L87 Difference]: Start difference. First operand 89209 states and 128984 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 02:08:42,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:44,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:47,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:49,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:51,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:55,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:08:58,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:01,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:04,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:06,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:08,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:11,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:09:11,917 INFO L93 Difference]: Finished difference Result 136599 states and 197695 transitions. [2021-11-21 02:09:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:09:11,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 339 [2021-11-21 02:09:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:09:12,446 INFO L225 Difference]: With dead ends: 136599 [2021-11-21 02:09:12,446 INFO L226 Difference]: Without dead ends: 93106 [2021-11-21 02:09:12,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-21 02:09:12,561 INFO L933 BasicCegarLoop]: 4286 mSDtfsCounter, 3380 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 14 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 7803 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2021-11-21 02:09:12,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3383 Valid, 7803 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1027 Invalid, 10 Unknown, 0 Unchecked, 33.7s Time] [2021-11-21 02:09:12,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93106 states. [2021-11-21 02:09:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93106 to 93099. [2021-11-21 02:09:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93099 states, 59560 states have (on average 1.3337978509066488) internal successors, (79441), 60046 states have internal predecessors, (79441), 27541 states have call successors, (27541), 6013 states have call predecessors, (27541), 5996 states have return successors, (27645), 27345 states have call predecessors, (27645), 27538 states have call successors, (27645) [2021-11-21 02:09:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93099 states to 93099 states and 134627 transitions. [2021-11-21 02:09:16,035 INFO L78 Accepts]: Start accepts. Automaton has 93099 states and 134627 transitions. Word has length 339 [2021-11-21 02:09:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:09:16,036 INFO L470 AbstractCegarLoop]: Abstraction has 93099 states and 134627 transitions. [2021-11-21 02:09:16,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 02:09:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 93099 states and 134627 transitions. [2021-11-21 02:09:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-21 02:09:16,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:09:16,086 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:09:16,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 02:09:16,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260563da-17c3-40a8-952e-c108b0338993/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 02:09:16,300 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:09:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:09:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2134475037, now seen corresponding path program 1 times [2021-11-21 02:09:16,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:09:16,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934145546] [2021-11-21 02:09:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:09:16,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:09:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:09:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 1362 trivial. 0 not checked. [2021-11-21 02:09:17,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:09:17,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934145546] [2021-11-21 02:09:17,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934145546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:09:17,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:09:17,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:09:17,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45164394] [2021-11-21 02:09:17,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:09:17,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:09:17,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:09:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:09:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:09:17,425 INFO L87 Difference]: Start difference. First operand 93099 states and 134627 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 02:09:23,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:09:26,164 WARN L515 Checker$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 02:09:28,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:09:30,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:34,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:39,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:42,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:45,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:48,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:50,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:52,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:55,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:09:56,136 INFO L93 Difference]: Finished difference Result 144636 states and 209266 transitions. [2021-11-21 02:09:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:09:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 342 [2021-11-21 02:09:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:09:56,692 INFO L225 Difference]: With dead ends: 144636 [2021-11-21 02:09:56,692 INFO L226 Difference]: Without dead ends: 97253 [2021-11-21 02:09:56,810 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 02:09:56,811 INFO L933 BasicCegarLoop]: 6429 mSDtfsCounter, 3297 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 9974 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:09:56,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3301 Valid, 9974 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1445 Invalid, 10 Unknown, 0 Unchecked, 36.5s Time] [2021-11-21 02:09:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97253 states. [2021-11-21 02:09:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97253 to 97193. [2021-11-21 02:09:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97193 states, 62147 states have (on average 1.3337892416367645) internal successors, (82891), 62667 states have internal predecessors, (82891), 28756 states have call successors, (28756), 6303 states have call predecessors, (28756), 6288 states have return successors, (28868), 28543 states have call predecessors, (28868), 28753 states have call successors, (28868) [2021-11-21 02:10:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97193 states to 97193 states and 140515 transitions. [2021-11-21 02:10:00,422 INFO L78 Accepts]: Start accepts. Automaton has 97193 states and 140515 transitions. Word has length 342 [2021-11-21 02:10:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:10:00,423 INFO L470 AbstractCegarLoop]: Abstraction has 97193 states and 140515 transitions. [2021-11-21 02:10:00,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 02:10:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 97193 states and 140515 transitions. [2021-11-21 02:10:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-21 02:10:00,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:10:00,484 INFO L514 BasicCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:10:00,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 02:10:00,484 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:10:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:10:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1023224545, now seen corresponding path program 1 times [2021-11-21 02:10:00,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:10:00,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537542511] [2021-11-21 02:10:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:10:00,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:10:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:10:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2021-11-21 02:10:01,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:10:01,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537542511] [2021-11-21 02:10:01,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537542511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:10:01,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:10:01,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:10:01,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730940623] [2021-11-21 02:10:01,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:10:01,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:10:01,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:10:01,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:10:01,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:10:01,484 INFO L87 Difference]: Start difference. First operand 97193 states and 140515 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 02:10:07,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:10:11,568 WARN L515 Checker$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 02:10:13,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:18,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:22,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:26,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:30,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:33,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:36,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:38,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:40,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:42,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:10:44,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:10:44,329 INFO L93 Difference]: Finished difference Result 225069 states and 325473 transitions. [2021-11-21 02:10:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:10:44,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 350 [2021-11-21 02:10:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:10:44,870 INFO L225 Difference]: With dead ends: 225069 [2021-11-21 02:10:44,870 INFO L226 Difference]: Without dead ends: 129516 [2021-11-21 02:10:45,320 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 02:10:45,321 INFO L933 BasicCegarLoop]: 6244 mSDtfsCounter, 3325 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 8 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 9789 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2021-11-21 02:10:45,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3330 Valid, 9789 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1426 Invalid, 10 Unknown, 0 Unchecked, 39.1s Time] [2021-11-21 02:10:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129516 states. [2021-11-21 02:10:49,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129516 to 129509. [2021-11-21 02:10:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129509 states, 82841 states have (on average 1.3331925012976666) internal successors, (110443), 83511 states have internal predecessors, (110443), 38293 states have call successors, (38293), 8391 states have call predecessors, (38293), 8373 states have return successors, (38444), 38035 states have call predecessors, (38444), 38290 states have call successors, (38444) [2021-11-21 02:10:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129509 states to 129509 states and 187180 transitions. [2021-11-21 02:10:50,341 INFO L78 Accepts]: Start accepts. Automaton has 129509 states and 187180 transitions. Word has length 350 [2021-11-21 02:10:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:10:50,342 INFO L470 AbstractCegarLoop]: Abstraction has 129509 states and 187180 transitions. [2021-11-21 02:10:50,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 02:10:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 129509 states and 187180 transitions. [2021-11-21 02:10:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-21 02:10:50,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:10:50,402 INFO L514 BasicCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 7, 7, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:10:50,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 02:10:50,403 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:10:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:10:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 24915631, now seen corresponding path program 1 times [2021-11-21 02:10:50,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:10:50,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654263578] [2021-11-21 02:10:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:10:50,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:10:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:10:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1468 trivial. 0 not checked. [2021-11-21 02:10:51,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:10:51,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654263578] [2021-11-21 02:10:51,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654263578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:10:51,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:10:51,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:10:51,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713141096] [2021-11-21 02:10:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:10:51,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:10:51,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:10:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:10:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:10:51,320 INFO L87 Difference]: Start difference. First operand 129509 states and 187180 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 02:10:58,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:11:01,419 WARN L515 Checker$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 02:11:03,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:08,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:10,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:13,967 WARN L515 Checker$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 02:11:18,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:22,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:25,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:27,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:29,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:32,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:34,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:11:36,043 INFO L93 Difference]: Finished difference Result 200836 states and 290494 transitions. [2021-11-21 02:11:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:11:36,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 359 [2021-11-21 02:11:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:11:36,567 INFO L225 Difference]: With dead ends: 200836 [2021-11-21 02:11:36,567 INFO L226 Difference]: Without dead ends: 133396 [2021-11-21 02:11:36,737 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 02:11:36,738 INFO L933 BasicCegarLoop]: 6516 mSDtfsCounter, 3351 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 8 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 10061 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2021-11-21 02:11:36,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3354 Valid, 10061 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1464 Invalid, 12 Unknown, 0 Unchecked, 41.5s Time] [2021-11-21 02:11:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133396 states. [2021-11-21 02:11:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133396 to 133377. [2021-11-21 02:11:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133377 states, 85299 states have (on average 1.3332629925321515) internal successors, (113726), 85989 states have internal predecessors, (113726), 39453 states have call successors, (39453), 8641 states have call predecessors, (39453), 8623 states have return successors, (39609), 39190 states have call predecessors, (39609), 39450 states have call successors, (39609) [2021-11-21 02:11:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133377 states to 133377 states and 192788 transitions. [2021-11-21 02:11:42,054 INFO L78 Accepts]: Start accepts. Automaton has 133377 states and 192788 transitions. Word has length 359 [2021-11-21 02:11:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:11:42,055 INFO L470 AbstractCegarLoop]: Abstraction has 133377 states and 192788 transitions. [2021-11-21 02:11:42,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 02:11:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 133377 states and 192788 transitions. [2021-11-21 02:11:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-11-21 02:11:42,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:11:42,118 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:42,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 02:11:42,119 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:11:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:11:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1758474996, now seen corresponding path program 1 times [2021-11-21 02:11:42,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:11:42,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100318937] [2021-11-21 02:11:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:11:42,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:11:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:11:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2021-11-21 02:11:43,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:11:43,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100318937] [2021-11-21 02:11:43,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100318937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:11:43,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:11:43,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:11:43,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989086576] [2021-11-21 02:11:43,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:11:43,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:11:43,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:11:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:11:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:11:43,063 INFO L87 Difference]: Start difference. First operand 133377 states and 192788 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 02:11:47,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:11:51,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:11:53,531 WARN L515 Checker$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 02:11:58,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:03,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:06,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:10,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:12,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:14,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:17,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:19,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:12:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:12:20,706 INFO L93 Difference]: Finished difference Result 225989 states and 327142 transitions. [2021-11-21 02:12:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:12:20,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 354 [2021-11-21 02:12:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:12:21,323 INFO L225 Difference]: With dead ends: 225989 [2021-11-21 02:12:21,323 INFO L226 Difference]: Without dead ends: 154685 [2021-11-21 02:12:21,806 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 02:12:21,807 INFO L933 BasicCegarLoop]: 4256 mSDtfsCounter, 2243 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 16 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 7793 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:12:21,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2247 Valid, 7793 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1074 Invalid, 11 Unknown, 0 Unchecked, 34.0s Time] [2021-11-21 02:12:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154685 states.