./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-rndis_wlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS --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 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:11:02,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:11:02,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:11:02,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:11:02,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:11:02,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:11:02,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:11:02,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:11:02,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:11:02,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:11:02,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:11:02,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:11:02,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:11:02,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:11:02,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:11:02,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:11:02,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:11:02,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:11:02,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:11:02,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:11:02,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:11:02,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:11:02,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:11:02,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:11:02,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:11:02,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:11:02,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:11:02,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:11:02,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:11:02,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:11:02,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:11:02,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:11:02,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:11:02,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:11:02,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:11:02,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:11:02,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:11:02,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:11:02,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:11:02,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:11:02,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:11:02,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:11:02,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:11:02,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:11:02,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:11:02,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:11:02,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:11:02,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:11:02,444 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:11:02,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:11:02,445 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:11:02,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:11:02,446 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:11:02,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:11:02,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:11:02,447 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:11:02,447 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:11:02,448 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:11:02,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:11:02,448 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:11:02,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:11:02,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:11:02,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:11:02,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:11:02,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:11:02,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:11:02,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:11:02,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:11:02,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:11:02,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:11:02,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:11:02,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:11:02,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:11:02,454 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:11:02,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:11:02,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:11:02,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:11:02,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:11:02,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:11:02,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:11:02,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 [2022-11-19 08:11:02,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:11:02,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:11:02,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:11:02,804 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:11:02,805 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:11:02,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2022-11-19 08:11:02,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/data/a9df41b59/04b1824306ba4f6a9fb7483c8eba528b/FLAGca209492c [2022-11-19 08:11:04,026 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:11:04,028 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2022-11-19 08:11:04,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/data/a9df41b59/04b1824306ba4f6a9fb7483c8eba528b/FLAGca209492c [2022-11-19 08:11:04,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/data/a9df41b59/04b1824306ba4f6a9fb7483c8eba528b [2022-11-19 08:11:04,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:11:04,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:11:04,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:11:04,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:11:04,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:11:04,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:11:04" (1/1) ... [2022-11-19 08:11:04,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51053ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:04, skipping insertion in model container [2022-11-19 08:11:04,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:11:04" (1/1) ... [2022-11-19 08:11:04,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:11:04,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:11:08,653 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2022-11-19 08:11:08,661 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2022-11-19 08:11:08,662 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2022-11-19 08:11:08,663 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2022-11-19 08:11:08,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:11:08,762 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:11:09,392 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2022-11-19 08:11:09,392 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2022-11-19 08:11:09,393 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2022-11-19 08:11:09,394 WARN L234 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_b38de1c6-57cb-490b-a6af-74da68183b4a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2022-11-19 08:11:09,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:11:09,704 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:11:09,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09 WrapperNode [2022-11-19 08:11:09,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:11:09,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:11:09,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:11:09,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:11:09,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:09,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,279 INFO L138 Inliner]: procedures = 396, calls = 4554, calls flagged for inlining = 219, calls inlined = 198, statements flattened = 8998 [2022-11-19 08:11:10,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:11:10,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:11:10,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:11:10,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:11:10,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:11:10,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:11:10,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:11:10,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:11:10,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (1/1) ... [2022-11-19 08:11:10,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:11:10,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:11:10,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:11:10,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b38de1c6-57cb-490b-a6af-74da68183b4a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:11:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2022-11-19 08:11:11,001 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2022-11-19 08:11:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-19 08:11:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-19 08:11:11,002 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2022-11-19 08:11:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2022-11-19 08:11:11,002 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2022-11-19 08:11:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2022-11-19 08:11:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:11:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:11:11,003 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2022-11-19 08:11:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2022-11-19 08:11:11,004 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2022-11-19 08:11:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2022-11-19 08:11:11,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:11:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:11:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2022-11-19 08:11:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2022-11-19 08:11:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2022-11-19 08:11:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2022-11-19 08:11:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2022-11-19 08:11:11,006 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2022-11-19 08:11:11,006 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2022-11-19 08:11:11,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2022-11-19 08:11:11,007 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2022-11-19 08:11:11,007 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2022-11-19 08:11:11,007 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2022-11-19 08:11:11,007 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2022-11-19 08:11:11,008 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2022-11-19 08:11:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2022-11-19 08:11:11,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:11:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:11:11,009 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-19 08:11:11,009 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-19 08:11:11,009 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 08:11:11,009 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 08:11:11,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:11:11,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:11:11,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:11:11,010 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2022-11-19 08:11:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2022-11-19 08:11:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2022-11-19 08:11:11,012 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2022-11-19 08:11:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2022-11-19 08:11:11,013 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2022-11-19 08:11:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-19 08:11:11,013 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-19 08:11:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:11:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:11:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2022-11-19 08:11:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2022-11-19 08:11:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2022-11-19 08:11:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2022-11-19 08:11:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2022-11-19 08:11:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2022-11-19 08:11:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-19 08:11:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-19 08:11:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:11:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2022-11-19 08:11:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2022-11-19 08:11:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-11-19 08:11:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-11-19 08:11:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:11:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:11:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:11:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-19 08:11:11,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-19 08:11:11,020 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2022-11-19 08:11:11,020 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2022-11-19 08:11:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:11:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2022-11-19 08:11:11,021 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2022-11-19 08:11:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:11:11,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:11:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:11:11,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:11:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2022-11-19 08:11:11,023 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2022-11-19 08:11:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2022-11-19 08:11:11,023 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2022-11-19 08:11:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2022-11-19 08:11:11,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2022-11-19 08:11:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:11:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2022-11-19 08:11:11,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2022-11-19 08:11:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2022-11-19 08:11:11,027 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2022-11-19 08:11:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:11:11,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:11:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2022-11-19 08:11:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2022-11-19 08:11:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 08:11:11,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 08:11:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:11:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2022-11-19 08:11:11,029 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2022-11-19 08:11:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:11:11,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:11:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2022-11-19 08:11:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2022-11-19 08:11:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:11:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2022-11-19 08:11:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2022-11-19 08:11:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2022-11-19 08:11:11,032 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2022-11-19 08:11:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:11:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:11:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-11-19 08:11:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-11-19 08:11:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2022-11-19 08:11:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2022-11-19 08:11:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:11:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:11:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2022-11-19 08:11:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2022-11-19 08:11:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-19 08:11:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-19 08:11:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:11:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:11:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:11:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:11:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:11:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:11:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 08:11:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 08:11:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:11:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:11:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:11:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:11:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-19 08:11:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-19 08:11:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-19 08:11:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-19 08:11:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2022-11-19 08:11:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2022-11-19 08:11:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:11:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:11:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2022-11-19 08:11:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2022-11-19 08:11:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-19 08:11:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-19 08:11:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2022-11-19 08:11:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2022-11-19 08:11:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-11-19 08:11:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-11-19 08:11:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2022-11-19 08:11:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2022-11-19 08:11:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:11:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:11:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2022-11-19 08:11:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2022-11-19 08:11:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:11:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:11:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 08:11:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 08:11:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 08:11:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 08:11:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:11:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:11:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:11:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2022-11-19 08:11:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2022-11-19 08:11:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:11:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2022-11-19 08:11:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2022-11-19 08:11:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2022-11-19 08:11:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2022-11-19 08:11:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2022-11-19 08:11:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2022-11-19 08:11:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 08:11:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 08:11:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:11:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2022-11-19 08:11:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2022-11-19 08:11:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:11:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:11:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2022-11-19 08:11:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2022-11-19 08:11:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 08:11:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 08:11:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:11:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:11:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2022-11-19 08:11:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2022-11-19 08:11:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:11:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:11:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:11:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:11:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2022-11-19 08:11:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2022-11-19 08:11:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 08:11:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 08:11:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:11:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:11:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2022-11-19 08:11:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2022-11-19 08:11:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-19 08:11:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-19 08:11:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2022-11-19 08:11:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2022-11-19 08:11:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:11:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:11:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2022-11-19 08:11:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2022-11-19 08:11:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2022-11-19 08:11:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2022-11-19 08:11:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2022-11-19 08:11:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2022-11-19 08:11:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:11:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2022-11-19 08:11:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2022-11-19 08:11:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:11:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:11:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2022-11-19 08:11:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2022-11-19 08:11:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-11-19 08:11:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-11-19 08:11:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 08:11:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 08:11:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2022-11-19 08:11:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2022-11-19 08:11:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:11:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:11:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 08:11:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 08:11:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2022-11-19 08:11:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2022-11-19 08:11:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2022-11-19 08:11:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2022-11-19 08:11:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2022-11-19 08:11:11,056 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2022-11-19 08:11:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2022-11-19 08:11:11,056 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2022-11-19 08:11:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2022-11-19 08:11:11,056 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2022-11-19 08:11:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-19 08:11:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:11:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-19 08:11:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-19 08:11:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2022-11-19 08:11:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2022-11-19 08:11:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:11:11,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:11:12,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:11:12,387 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:11:12,965 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:11:35,506 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:11:35,985 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:11:38,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:11:38,481 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:11:38,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:11:38 BoogieIcfgContainer [2022-11-19 08:11:38,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:11:38,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:11:38,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:11:38,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:11:38,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:11:04" (1/3) ... [2022-11-19 08:11:38,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc86cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:11:38, skipping insertion in model container [2022-11-19 08:11:38,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:09" (2/3) ... [2022-11-19 08:11:38,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc86cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:11:38, skipping insertion in model container [2022-11-19 08:11:38,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:11:38" (3/3) ... [2022-11-19 08:11:38,508 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2022-11-19 08:11:38,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:11:38,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 08:11:38,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:11:38,674 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28cdd3be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:11:38,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 08:11:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) [2022-11-19 08:11:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-19 08:11:38,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:38,758 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2022-11-19 08:11:38,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1490322944, now seen corresponding path program 1 times [2022-11-19 08:11:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:38,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098679047] [2022-11-19 08:11:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2022-11-19 08:11:40,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:40,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098679047] [2022-11-19 08:11:40,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098679047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:40,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:40,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:40,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338695883] [2022-11-19 08:11:40,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:40,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:40,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:40,578 INFO L87 Difference]: Start difference. First operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-19 08:11:44,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:11:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:47,416 INFO L93 Difference]: Finished difference Result 5818 states and 8556 transitions. [2022-11-19 08:11:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 384 [2022-11-19 08:11:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:47,477 INFO L225 Difference]: With dead ends: 5818 [2022-11-19 08:11:47,477 INFO L226 Difference]: Without dead ends: 3865 [2022-11-19 08:11:47,496 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:11:47,500 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 2755 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2755 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:47,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2755 Valid, 5628 Invalid, 925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 08:11:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2022-11-19 08:11:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3863. [2022-11-19 08:11:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 2370 states have (on average 1.310548523206751) internal successors, (3106), 2375 states have internal predecessors, (3106), 1270 states have call successors, (1270), 222 states have call predecessors, (1270), 221 states have return successors, (1267), 1267 states have call predecessors, (1267), 1267 states have call successors, (1267) [2022-11-19 08:11:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5643 transitions. [2022-11-19 08:11:48,130 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5643 transitions. Word has length 384 [2022-11-19 08:11:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:48,141 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5643 transitions. [2022-11-19 08:11:48,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-19 08:11:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5643 transitions. [2022-11-19 08:11:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-19 08:11:48,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:48,173 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:48,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:11:48,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:48,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:48,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1296327641, now seen corresponding path program 1 times [2022-11-19 08:11:48,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:48,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727726464] [2022-11-19 08:11:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2022-11-19 08:11:49,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727726464] [2022-11-19 08:11:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727726464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:49,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:49,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199272359] [2022-11-19 08:11:49,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:49,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:49,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:49,250 INFO L87 Difference]: Start difference. First operand 3863 states and 5643 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-19 08:11:54,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:11:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:56,143 INFO L93 Difference]: Finished difference Result 11261 states and 16442 transitions. [2022-11-19 08:11:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 438 [2022-11-19 08:11:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:56,213 INFO L225 Difference]: With dead ends: 11261 [2022-11-19 08:11:56,214 INFO L226 Difference]: Without dead ends: 7471 [2022-11-19 08:11:56,240 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:11:56,242 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 2642 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:56,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 5599 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 906 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 08:11:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2022-11-19 08:11:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7460. [2022-11-19 08:11:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 4587 states have (on average 1.3091345105733594) internal successors, (6005), 4601 states have internal predecessors, (6005), 2437 states have call successors, (2437), 435 states have call predecessors, (2437), 434 states have return successors, (2434), 2427 states have call predecessors, (2434), 2434 states have call successors, (2434) [2022-11-19 08:11:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 10876 transitions. [2022-11-19 08:11:57,005 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 10876 transitions. Word has length 438 [2022-11-19 08:11:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:57,007 INFO L495 AbstractCegarLoop]: Abstraction has 7460 states and 10876 transitions. [2022-11-19 08:11:57,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-19 08:11:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 10876 transitions. [2022-11-19 08:11:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-19 08:11:57,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:57,037 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:11:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:11:57,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1078233763, now seen corresponding path program 1 times [2022-11-19 08:11:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:57,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178213424] [2022-11-19 08:11:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2022-11-19 08:11:58,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:58,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178213424] [2022-11-19 08:11:58,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178213424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:58,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:58,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:11:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882394338] [2022-11-19 08:11:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:58,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:11:58,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:11:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:11:58,738 INFO L87 Difference]: Start difference. First operand 7460 states and 10876 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-19 08:12:03,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:06,452 INFO L93 Difference]: Finished difference Result 11221 states and 16358 transitions. [2022-11-19 08:12:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:12:06,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 431 [2022-11-19 08:12:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:06,553 INFO L225 Difference]: With dead ends: 11221 [2022-11-19 08:12:06,553 INFO L226 Difference]: Without dead ends: 11196 [2022-11-19 08:12:06,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:06,567 INFO L413 NwaCegarLoop]: 3206 mSDtfsCounter, 2811 mSDsluCounter, 5581 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 8787 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:06,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2811 Valid, 8787 Invalid, 1341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1340 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-19 08:12:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2022-11-19 08:12:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 11194. [2022-11-19 08:12:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11194 states, 6887 states have (on average 1.3100043560331058) internal successors, (9022), 6905 states have internal predecessors, (9022), 3649 states have call successors, (3649), 657 states have call predecessors, (3649), 656 states have return successors, (3646), 3637 states have call predecessors, (3646), 3646 states have call successors, (3646) [2022-11-19 08:12:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 16317 transitions. [2022-11-19 08:12:07,589 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 16317 transitions. Word has length 431 [2022-11-19 08:12:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:07,591 INFO L495 AbstractCegarLoop]: Abstraction has 11194 states and 16317 transitions. [2022-11-19 08:12:07,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-19 08:12:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 16317 transitions. [2022-11-19 08:12:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-11-19 08:12:07,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:07,637 INFO L195 NwaCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:12:07,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1384448964, now seen corresponding path program 1 times [2022-11-19 08:12:07,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:07,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589132595] [2022-11-19 08:12:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5287 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5276 trivial. 0 not checked. [2022-11-19 08:12:08,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589132595] [2022-11-19 08:12:08,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589132595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:08,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:08,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:08,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2309430] [2022-11-19 08:12:08,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:08,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:08,550 INFO L87 Difference]: Start difference. First operand 11194 states and 16317 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-19 08:12:12,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:14,858 INFO L93 Difference]: Finished difference Result 24105 states and 35112 transitions. [2022-11-19 08:12:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 460 [2022-11-19 08:12:14,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:14,961 INFO L225 Difference]: With dead ends: 24105 [2022-11-19 08:12:14,961 INFO L226 Difference]: Without dead ends: 12984 [2022-11-19 08:12:15,030 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:12:15,031 INFO L413 NwaCegarLoop]: 3186 mSDtfsCounter, 2643 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 5665 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:15,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2643 Valid, 5665 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 890 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-19 08:12:15,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2022-11-19 08:12:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 12976. [2022-11-19 08:12:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12976 states, 7981 states have (on average 1.30835734870317) internal successors, (10442), 8003 states have internal predecessors, (10442), 4226 states have call successors, (4226), 769 states have call predecessors, (4226), 767 states have return successors, (4223), 4210 states have call predecessors, (4223), 4223 states have call successors, (4223) [2022-11-19 08:12:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12976 states to 12976 states and 18891 transitions. [2022-11-19 08:12:15,880 INFO L78 Accepts]: Start accepts. Automaton has 12976 states and 18891 transitions. Word has length 460 [2022-11-19 08:12:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:15,883 INFO L495 AbstractCegarLoop]: Abstraction has 12976 states and 18891 transitions. [2022-11-19 08:12:15,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-19 08:12:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 12976 states and 18891 transitions. [2022-11-19 08:12:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-19 08:12:15,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:15,932 INFO L195 NwaCegarLoop]: trace histogram [39, 36, 36, 36, 36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:12:15,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1117109107, now seen corresponding path program 1 times [2022-11-19 08:12:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:15,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85979411] [2022-11-19 08:12:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5277 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5274 trivial. 0 not checked. [2022-11-19 08:12:16,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:16,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85979411] [2022-11-19 08:12:16,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85979411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:16,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:16,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339036625] [2022-11-19 08:12:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:16,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:16,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:16,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:16,782 INFO L87 Difference]: Start difference. First operand 12976 states and 18891 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, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 08:12:21,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:22,597 INFO L93 Difference]: Finished difference Result 31305 states and 45366 transitions. [2022-11-19 08:12:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:22,598 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, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 479 [2022-11-19 08:12:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:22,737 INFO L225 Difference]: With dead ends: 31305 [2022-11-19 08:12:22,737 INFO L226 Difference]: Without dead ends: 18402 [2022-11-19 08:12:22,810 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:12:22,811 INFO L413 NwaCegarLoop]: 2958 mSDtfsCounter, 1569 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:22,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 5385 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 951 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-19 08:12:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18402 states. [2022-11-19 08:12:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18402 to 18381. [2022-11-19 08:12:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18381 states, 11365 states have (on average 1.3114826220853497) internal successors, (14905), 11413 states have internal predecessors, (14905), 5800 states have call successors, (5800), 1217 states have call predecessors, (5800), 1214 states have return successors, (5797), 5756 states have call predecessors, (5797), 5797 states have call successors, (5797) [2022-11-19 08:12:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18381 states to 18381 states and 26502 transitions. [2022-11-19 08:12:24,179 INFO L78 Accepts]: Start accepts. Automaton has 18381 states and 26502 transitions. Word has length 479 [2022-11-19 08:12:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:24,180 INFO L495 AbstractCegarLoop]: Abstraction has 18381 states and 26502 transitions. [2022-11-19 08:12:24,180 INFO L496 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, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 08:12:24,181 INFO L276 IsEmpty]: Start isEmpty. Operand 18381 states and 26502 transitions. [2022-11-19 08:12:24,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-19 08:12:24,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:24,240 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:24,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:12:24,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash -368913599, now seen corresponding path program 1 times [2022-11-19 08:12:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396925908] [2022-11-19 08:12:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5629 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5629 trivial. 0 not checked. [2022-11-19 08:12:26,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:26,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396925908] [2022-11-19 08:12:26,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396925908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:26,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:26,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:12:26,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503299795] [2022-11-19 08:12:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:26,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:12:26,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:12:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:12:26,096 INFO L87 Difference]: Start difference. First operand 18381 states and 26502 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:12:30,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:37,132 INFO L93 Difference]: Finished difference Result 26014 states and 38784 transitions. [2022-11-19 08:12:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:12:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 513 [2022-11-19 08:12:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:37,320 INFO L225 Difference]: With dead ends: 26014 [2022-11-19 08:12:37,321 INFO L226 Difference]: Without dead ends: 26012 [2022-11-19 08:12:37,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:37,349 INFO L413 NwaCegarLoop]: 4467 mSDtfsCounter, 4788 mSDsluCounter, 7216 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 368 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5159 SdHoareTripleChecker+Valid, 11683 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:37,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5159 Valid, 11683 Invalid, 2516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [368 Valid, 2147 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-19 08:12:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26012 states. [2022-11-19 08:12:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26012 to 18381. [2022-11-19 08:12:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18381 states, 11365 states have (on average 1.3113066432028158) internal successors, (14903), 11413 states have internal predecessors, (14903), 5800 states have call successors, (5800), 1217 states have call predecessors, (5800), 1214 states have return successors, (5797), 5756 states have call predecessors, (5797), 5797 states have call successors, (5797) [2022-11-19 08:12:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18381 states to 18381 states and 26500 transitions. [2022-11-19 08:12:39,073 INFO L78 Accepts]: Start accepts. Automaton has 18381 states and 26500 transitions. Word has length 513 [2022-11-19 08:12:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:39,075 INFO L495 AbstractCegarLoop]: Abstraction has 18381 states and 26500 transitions. [2022-11-19 08:12:39,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:12:39,076 INFO L276 IsEmpty]: Start isEmpty. Operand 18381 states and 26500 transitions. [2022-11-19 08:12:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-11-19 08:12:39,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:39,154 INFO L195 NwaCegarLoop]: trace histogram [43, 36, 36, 36, 36, 36, 36, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:39,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:12:39,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:39,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash -740090266, now seen corresponding path program 1 times [2022-11-19 08:12:39,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:39,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464425011] [2022-11-19 08:12:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:39,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5652 trivial. 0 not checked. [2022-11-19 08:12:40,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:40,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464425011] [2022-11-19 08:12:40,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464425011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:40,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:40,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726498089] [2022-11-19 08:12:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:40,060 INFO L87 Difference]: Start difference. First operand 18381 states and 26500 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 08:12:46,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:47,577 INFO L93 Difference]: Finished difference Result 41970 states and 60447 transitions. [2022-11-19 08:12:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:47,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 546 [2022-11-19 08:12:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:47,744 INFO L225 Difference]: With dead ends: 41970 [2022-11-19 08:12:47,744 INFO L226 Difference]: Without dead ends: 24611 [2022-11-19 08:12:47,826 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:12:47,828 INFO L413 NwaCegarLoop]: 3798 mSDtfsCounter, 1599 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 6193 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:47,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 6193 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1193 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-19 08:12:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24611 states. [2022-11-19 08:12:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24611 to 24590. [2022-11-19 08:12:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24590 states, 15230 states have (on average 1.3129349967170059) internal successors, (19996), 15305 states have internal predecessors, (19996), 7666 states have call successors, (7666), 1696 states have call predecessors, (7666), 1692 states have return successors, (7663), 7594 states have call predecessors, (7663), 7663 states have call successors, (7663) [2022-11-19 08:12:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24590 states to 24590 states and 35325 transitions. [2022-11-19 08:12:49,741 INFO L78 Accepts]: Start accepts. Automaton has 24590 states and 35325 transitions. Word has length 546 [2022-11-19 08:12:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:49,742 INFO L495 AbstractCegarLoop]: Abstraction has 24590 states and 35325 transitions. [2022-11-19 08:12:49,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 08:12:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 24590 states and 35325 transitions. [2022-11-19 08:12:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2022-11-19 08:12:49,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:49,840 INFO L195 NwaCegarLoop]: trace histogram [45, 36, 36, 36, 36, 36, 36, 26, 26, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:49,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:12:49,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:49,842 INFO L85 PathProgramCache]: Analyzing trace with hash 834559021, now seen corresponding path program 1 times [2022-11-19 08:12:49,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:49,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009234941] [2022-11-19 08:12:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:49,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7242 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 7221 trivial. 0 not checked. [2022-11-19 08:12:51,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:51,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009234941] [2022-11-19 08:12:51,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009234941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:51,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:51,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371049871] [2022-11-19 08:12:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:51,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:51,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:51,357 INFO L87 Difference]: Start difference. First operand 24590 states and 35325 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-19 08:12:58,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:59,928 INFO L93 Difference]: Finished difference Result 70780 states and 101723 transitions. [2022-11-19 08:12:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:59,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 736 [2022-11-19 08:12:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:00,387 INFO L225 Difference]: With dead ends: 70780 [2022-11-19 08:13:00,387 INFO L226 Difference]: Without dead ends: 47212 [2022-11-19 08:13:00,495 INFO L412 NwaCegarLoop]: 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 [2022-11-19 08:13:00,496 INFO L413 NwaCegarLoop]: 4780 mSDtfsCounter, 2653 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 7238 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:00,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2653 Valid, 7238 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1313 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 08:13:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47212 states. [2022-11-19 08:13:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47212 to 47210. [2022-11-19 08:13:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47210 states, 29318 states have (on average 1.311242240261955) internal successors, (38443), 29411 states have internal predecessors, (38443), 14638 states have call successors, (14638), 3256 states have call predecessors, (14638), 3252 states have return successors, (14635), 14554 states have call predecessors, (14635), 14635 states have call successors, (14635) [2022-11-19 08:13:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47210 states to 47210 states and 67716 transitions. [2022-11-19 08:13:03,956 INFO L78 Accepts]: Start accepts. Automaton has 47210 states and 67716 transitions. Word has length 736 [2022-11-19 08:13:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:03,967 INFO L495 AbstractCegarLoop]: Abstraction has 47210 states and 67716 transitions. [2022-11-19 08:13:03,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-19 08:13:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 47210 states and 67716 transitions. [2022-11-19 08:13:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2022-11-19 08:13:04,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:04,199 INFO L195 NwaCegarLoop]: trace histogram [46, 36, 36, 36, 36, 36, 36, 27, 27, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:04,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:13:04,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash 47239269, now seen corresponding path program 1 times [2022-11-19 08:13:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823191165] [2022-11-19 08:13:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7444 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 7403 trivial. 0 not checked. [2022-11-19 08:13:05,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:05,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823191165] [2022-11-19 08:13:05,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823191165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:05,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:05,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:13:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587606828] [2022-11-19 08:13:05,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:05,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:13:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:13:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:13:05,783 INFO L87 Difference]: Start difference. First operand 47210 states and 67716 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2022-11-19 08:13:14,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:13:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:18,056 INFO L93 Difference]: Finished difference Result 109294 states and 156156 transitions. [2022-11-19 08:13:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:13:18,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 755 [2022-11-19 08:13:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:18,535 INFO L225 Difference]: With dead ends: 109294 [2022-11-19 08:13:18,535 INFO L226 Difference]: Without dead ends: 63106 [2022-11-19 08:13:18,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:13:18,808 INFO L413 NwaCegarLoop]: 3995 mSDtfsCounter, 2151 mSDsluCounter, 5187 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 9182 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:18,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2151 Valid, 9182 Invalid, 2643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2633 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-19 08:13:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63106 states. [2022-11-19 08:13:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63106 to 63085. [2022-11-19 08:13:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63085 states, 39211 states have (on average 1.309964040702864) internal successors, (51365), 39335 states have internal predecessors, (51365), 19216 states have call successors, (19216), 4661 states have call predecessors, (19216), 4656 states have return successors, (19213), 19100 states have call predecessors, (19213), 19213 states have call successors, (19213) [2022-11-19 08:13:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63085 states to 63085 states and 89794 transitions. [2022-11-19 08:13:23,304 INFO L78 Accepts]: Start accepts. Automaton has 63085 states and 89794 transitions. Word has length 755 [2022-11-19 08:13:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:23,306 INFO L495 AbstractCegarLoop]: Abstraction has 63085 states and 89794 transitions. [2022-11-19 08:13:23,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2022-11-19 08:13:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 63085 states and 89794 transitions. [2022-11-19 08:13:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2022-11-19 08:13:23,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:23,541 INFO L195 NwaCegarLoop]: trace histogram [48, 36, 36, 36, 36, 36, 36, 28, 28, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:23,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:13:23,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2047219082, now seen corresponding path program 1 times [2022-11-19 08:13:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:23,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569090759] [2022-11-19 08:13:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7761 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 7703 trivial. 0 not checked. [2022-11-19 08:13:25,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:25,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569090759] [2022-11-19 08:13:25,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569090759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:25,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:25,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:13:25,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067478395] [2022-11-19 08:13:25,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:25,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:13:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:25,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:13:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:13:25,317 INFO L87 Difference]: Start difference. First operand 63085 states and 89794 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2022-11-19 08:13:33,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:13:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:38,286 INFO L93 Difference]: Finished difference Result 137324 states and 195416 transitions. [2022-11-19 08:13:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:13:38,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) Word has length 808 [2022-11-19 08:13:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:38,775 INFO L225 Difference]: With dead ends: 137324 [2022-11-19 08:13:38,775 INFO L226 Difference]: Without dead ends: 75261 [2022-11-19 08:13:39,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:13:39,040 INFO L413 NwaCegarLoop]: 3799 mSDtfsCounter, 1582 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 2136 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 6859 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:39,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 6859 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2136 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-19 08:13:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75261 states. [2022-11-19 08:13:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75261 to 75240. [2022-11-19 08:13:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75240 states, 46800 states have (on average 1.3108333333333333) internal successors, (61347), 46955 states have internal predecessors, (61347), 22822 states have call successors, (22822), 5622 states have call predecessors, (22822), 5616 states have return successors, (22819), 22674 states have call predecessors, (22819), 22819 states have call successors, (22819) [2022-11-19 08:13:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75240 states to 75240 states and 106988 transitions. [2022-11-19 08:13:43,512 INFO L78 Accepts]: Start accepts. Automaton has 75240 states and 106988 transitions. Word has length 808 [2022-11-19 08:13:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:43,514 INFO L495 AbstractCegarLoop]: Abstraction has 75240 states and 106988 transitions. [2022-11-19 08:13:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2022-11-19 08:13:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 75240 states and 106988 transitions. [2022-11-19 08:13:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2022-11-19 08:13:44,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:44,072 INFO L195 NwaCegarLoop]: trace histogram [50, 36, 36, 36, 36, 36, 36, 29, 29, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:44,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:13:44,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -32575062, now seen corresponding path program 1 times [2022-11-19 08:13:44,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:44,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279900976] [2022-11-19 08:13:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8090 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 8013 trivial. 0 not checked. [2022-11-19 08:13:45,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:45,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279900976] [2022-11-19 08:13:45,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279900976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:45,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:45,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:13:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392616326] [2022-11-19 08:13:45,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:45,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:13:45,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:45,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:13:45,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:13:45,501 INFO L87 Difference]: Start difference. First operand 75240 states and 106988 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2022-11-19 08:13:55,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:13:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:59,739 INFO L93 Difference]: Finished difference Result 161802 states and 230044 transitions. [2022-11-19 08:13:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:13:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 831 [2022-11-19 08:13:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:00,273 INFO L225 Difference]: With dead ends: 161802 [2022-11-19 08:14:00,273 INFO L226 Difference]: Without dead ends: 87584 [2022-11-19 08:14:00,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:14:00,569 INFO L413 NwaCegarLoop]: 3803 mSDtfsCounter, 1633 mSDsluCounter, 5433 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 9236 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:00,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 9236 Invalid, 2616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2603 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-19 08:14:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87584 states. [2022-11-19 08:14:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87584 to 87563. [2022-11-19 08:14:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87563 states, 54497 states have (on average 1.3108427986861662) internal successors, (71437), 54683 states have internal predecessors, (71437), 26464 states have call successors, (26464), 6607 states have call predecessors, (26464), 6600 states have return successors, (26461), 26284 states have call predecessors, (26461), 26461 states have call successors, (26461) [2022-11-19 08:14:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87563 states to 87563 states and 124362 transitions. [2022-11-19 08:14:05,445 INFO L78 Accepts]: Start accepts. Automaton has 87563 states and 124362 transitions. Word has length 831 [2022-11-19 08:14:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:14:05,447 INFO L495 AbstractCegarLoop]: Abstraction has 87563 states and 124362 transitions. [2022-11-19 08:14:05,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2022-11-19 08:14:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 87563 states and 124362 transitions. [2022-11-19 08:14:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2022-11-19 08:14:05,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:14:05,785 INFO L195 NwaCegarLoop]: trace histogram [52, 36, 36, 36, 36, 36, 36, 31, 31, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:14:05,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:14:05,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:14:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:14:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash -658525351, now seen corresponding path program 1 times [2022-11-19 08:14:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:14:05,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483069317] [2022-11-19 08:14:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:14:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms