./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/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_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/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-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/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_186ce626-4444-4509-9370-68726d7580cd/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 3b1986f893b92b583df635a6037935ebceab765520aec8f1f2d3a2b6ea37b26f --- 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 08:25:07,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:25:07,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:25:07,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:25:07,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:25:07,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:25:07,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:25:07,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:25:07,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:25:07,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:25:07,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:25:07,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:25:07,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:25:07,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:25:07,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:25:07,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:25:07,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:25:07,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:25:07,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:25:07,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:25:07,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:25:07,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:25:07,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:25:07,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:25:07,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:25:07,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:25:07,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:25:07,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:25:07,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:25:07,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:25:07,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:25:07,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:25:07,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:25:07,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:25:07,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:25:07,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:25:07,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:25:07,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:25:07,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:25:07,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:25:07,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:25:07,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:25:07,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:25:07,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:25:07,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:25:07,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:25:07,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:25:07,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:25:07,710 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:25:07,711 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:25:07,711 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:25:07,711 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:25:07,712 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:25:07,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:25:07,713 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:25:07,713 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:25:07,713 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:25:07,714 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:25:07,714 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:25:07,714 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:25:07,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:25:07,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:25:07,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:25:07,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:25:07,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:25:07,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:25:07,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:25:07,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:25:07,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:25:07,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:25:07,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:25:07,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:07,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:25:07,719 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:25:07,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:25:07,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:25:07,720 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:25:07,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:25:07,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:25:07,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:25:07,721 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_186ce626-4444-4509-9370-68726d7580cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b1986f893b92b583df635a6037935ebceab765520aec8f1f2d3a2b6ea37b26f [2022-11-19 08:25:08,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:25:08,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:25:08,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:25:08,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:25:08,080 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:25:08,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-19 08:25:08,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/data/1ef6c9e82/9b5ddaf897c344198cea44c11855be6e/FLAG72e11c1cf [2022-11-19 08:25:09,586 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:25:09,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-19 08:25:09,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/data/1ef6c9e82/9b5ddaf897c344198cea44c11855be6e/FLAG72e11c1cf [2022-11-19 08:25:10,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/data/1ef6c9e82/9b5ddaf897c344198cea44c11855be6e [2022-11-19 08:25:10,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:25:10,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:25:10,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:10,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:25:10,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:25:10,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:10" (1/1) ... [2022-11-19 08:25:10,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da8c871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:10, skipping insertion in model container [2022-11-19 08:25:10,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:10" (1/1) ... [2022-11-19 08:25:10,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:25:10,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:25:17,323 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749649,749662] [2022-11-19 08:25:17,332 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749796,749809] [2022-11-19 08:25:17,332 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749935,749948] [2022-11-19 08:25:17,333 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[750093,750106] [2022-11-19 08:25:17,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:17,521 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:25:18,398 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749649,749662] [2022-11-19 08:25:18,399 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749796,749809] [2022-11-19 08:25:18,400 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749935,749948] [2022-11-19 08:25:18,400 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_186ce626-4444-4509-9370-68726d7580cd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[750093,750106] [2022-11-19 08:25:18,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:18,731 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:25:18,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18 WrapperNode [2022-11-19 08:25:18,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:18,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:18,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:25:18,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:25:18,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:18,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:19,536 INFO L138 Inliner]: procedures = 617, calls = 11664, calls flagged for inlining = 310, calls inlined = 246, statements flattened = 12640 [2022-11-19 08:25:19,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:19,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:25:19,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:25:19,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:25:19,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:19,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:19,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:19,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:19,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:20,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:20,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:20,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:20,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:25:20,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:25:20,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:25:20,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:25:20,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (1/1) ... [2022-11-19 08:25:20,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:20,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:25:20,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:25:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_186ce626-4444-4509-9370-68726d7580cd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:25:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 08:25:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 08:25:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:25:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:25:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2022-11-19 08:25:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2022-11-19 08:25:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2022-11-19 08:25:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2022-11-19 08:25:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2022-11-19 08:25:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2022-11-19 08:25:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:25:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:25:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 08:25:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 08:25:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-19 08:25:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-19 08:25:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2022-11-19 08:25:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2022-11-19 08:25:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2022-11-19 08:25:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2022-11-19 08:25:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:25:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:25:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 08:25:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 08:25:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2022-11-19 08:25:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2022-11-19 08:25:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2022-11-19 08:25:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2022-11-19 08:25:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 08:25:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 08:25:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:25:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:25:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:25:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:25:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:25:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:25:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:25:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:25:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 08:25:20,470 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 08:25:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2022-11-19 08:25:20,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2022-11-19 08:25:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:25:20,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:25:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:25:20,474 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:25:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2022-11-19 08:25:20,475 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2022-11-19 08:25:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2022-11-19 08:25:20,476 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2022-11-19 08:25:20,476 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2022-11-19 08:25:20,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2022-11-19 08:25:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 08:25:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 08:25:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:25:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2022-11-19 08:25:20,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2022-11-19 08:25:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 08:25:20,483 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 08:25:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2022-11-19 08:25:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2022-11-19 08:25:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:25:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:25:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2022-11-19 08:25:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2022-11-19 08:25:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2022-11-19 08:25:20,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2022-11-19 08:25:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:25:20,486 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:25:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2022-11-19 08:25:20,486 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2022-11-19 08:25:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:25:20,487 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:25:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-19 08:25:20,487 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-19 08:25:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:25:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:25:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:25:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 08:25:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 08:25:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:25:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2022-11-19 08:25:20,505 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2022-11-19 08:25:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:25:20,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:25:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2022-11-19 08:25:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2022-11-19 08:25:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:25:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:25:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:25:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2022-11-19 08:25:20,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2022-11-19 08:25:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2022-11-19 08:25:20,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2022-11-19 08:25:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:25:20,508 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:25:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 08:25:20,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 08:25:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 08:25:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 08:25:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:25:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:25:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2022-11-19 08:25:20,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2022-11-19 08:25:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 08:25:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 08:25:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 08:25:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 08:25:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2022-11-19 08:25:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2022-11-19 08:25:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 08:25:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 08:25:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2022-11-19 08:25:20,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2022-11-19 08:25:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2022-11-19 08:25:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2022-11-19 08:25:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2022-11-19 08:25:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2022-11-19 08:25:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:25:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:25:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:25:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:25:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:25:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:25:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2022-11-19 08:25:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2022-11-19 08:25:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:25:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:25:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2022-11-19 08:25:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2022-11-19 08:25:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:25:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:25:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:25:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-19 08:25:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-19 08:25:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:25:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2022-11-19 08:25:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2022-11-19 08:25:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:25:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:25:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2022-11-19 08:25:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2022-11-19 08:25:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 08:25:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 08:25:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2022-11-19 08:25:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2022-11-19 08:25:20,529 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:25:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:25:20,530 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:25:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:25:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2022-11-19 08:25:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2022-11-19 08:25:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2022-11-19 08:25:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2022-11-19 08:25:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-19 08:25:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-19 08:25:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2022-11-19 08:25:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2022-11-19 08:25:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-19 08:25:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-19 08:25:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:25:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:25:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-19 08:25:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-19 08:25:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2022-11-19 08:25:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2022-11-19 08:25:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2022-11-19 08:25:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2022-11-19 08:25:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 08:25:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 08:25:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:25:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:25:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:25:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:25:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2022-11-19 08:25:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2022-11-19 08:25:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-19 08:25:20,536 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-19 08:25:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2022-11-19 08:25:20,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2022-11-19 08:25:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2022-11-19 08:25:20,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2022-11-19 08:25:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2022-11-19 08:25:20,537 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2022-11-19 08:25:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2022-11-19 08:25:20,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2022-11-19 08:25:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:25:20,538 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:25:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2022-11-19 08:25:20,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2022-11-19 08:25:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2022-11-19 08:25:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2022-11-19 08:25:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2022-11-19 08:25:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2022-11-19 08:25:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2022-11-19 08:25:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2022-11-19 08:25:20,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 08:25:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 08:25:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:25:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:25:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2022-11-19 08:25:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2022-11-19 08:25:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2022-11-19 08:25:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2022-11-19 08:25:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 08:25:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 08:25:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:25:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:25:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:25:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:25:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2022-11-19 08:25:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2022-11-19 08:25:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 08:25:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 08:25:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-19 08:25:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-19 08:25:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 08:25:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 08:25:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 08:25:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 08:25:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:25:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2022-11-19 08:25:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2022-11-19 08:25:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:25:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:25:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2022-11-19 08:25:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2022-11-19 08:25:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:25:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2022-11-19 08:25:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2022-11-19 08:25:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2022-11-19 08:25:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2022-11-19 08:25:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2022-11-19 08:25:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2022-11-19 08:25:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2022-11-19 08:25:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2022-11-19 08:25:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2022-11-19 08:25:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2022-11-19 08:25:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 08:25:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 08:25:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:25:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2022-11-19 08:25:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2022-11-19 08:25:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 08:25:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 08:25:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 08:25:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 08:25:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2022-11-19 08:25:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2022-11-19 08:25:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2022-11-19 08:25:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2022-11-19 08:25:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 08:25:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 08:25:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:25:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:25:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2022-11-19 08:25:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2022-11-19 08:25:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:25:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:25:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:25:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:25:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 08:25:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 08:25:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2022-11-19 08:25:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2022-11-19 08:25:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2022-11-19 08:25:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2022-11-19 08:25:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2022-11-19 08:25:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2022-11-19 08:25:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-19 08:25:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-19 08:25:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2022-11-19 08:25:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2022-11-19 08:25:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 08:25:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 08:25:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-19 08:25:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-19 08:25:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 08:25:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 08:25:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-19 08:25:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-19 08:25:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2022-11-19 08:25:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2022-11-19 08:25:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2022-11-19 08:25:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2022-11-19 08:25:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-19 08:25:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-19 08:25:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:25:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:25:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:25:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2022-11-19 08:25:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2022-11-19 08:25:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:25:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:25:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2022-11-19 08:25:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2022-11-19 08:25:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2022-11-19 08:25:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2022-11-19 08:25:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 08:25:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 08:25:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2022-11-19 08:25:20,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2022-11-19 08:25:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 08:25:20,582 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 08:25:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2022-11-19 08:25:20,582 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2022-11-19 08:25:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 08:25:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 08:25:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 08:25:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 08:25:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2022-11-19 08:25:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2022-11-19 08:25:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:25:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:25:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 08:25:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 08:25:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 08:25:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 08:25:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 08:25:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 08:25:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 08:25:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 08:25:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2022-11-19 08:25:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2022-11-19 08:25:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:25:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:25:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2022-11-19 08:25:20,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2022-11-19 08:25:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-19 08:25:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2022-11-19 08:25:20,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2022-11-19 08:25:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2022-11-19 08:25:20,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2022-11-19 08:25:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:25:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2022-11-19 08:25:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2022-11-19 08:25:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2022-11-19 08:25:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2022-11-19 08:25:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:25:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:25:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 08:25:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 08:25:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2022-11-19 08:25:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2022-11-19 08:25:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2022-11-19 08:25:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2022-11-19 08:25:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-19 08:25:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-19 08:25:22,158 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:25:22,163 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:25:35,598 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:27:48,875 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:27:49,024 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:27:52,796 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:27:52,796 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:27:52,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:52 BoogieIcfgContainer [2022-11-19 08:27:52,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:27:52,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:27:52,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:27:52,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:27:52,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:25:10" (1/3) ... [2022-11-19 08:27:52,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2865d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:52, skipping insertion in model container [2022-11-19 08:27:52,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:18" (2/3) ... [2022-11-19 08:27:52,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2865d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:52, skipping insertion in model container [2022-11-19 08:27:52,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:52" (3/3) ... [2022-11-19 08:27:52,811 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2022-11-19 08:27:52,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:27:52,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 08:27:52,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:27:52,934 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;@3d3de2fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:27:52,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 08:27:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 2804 states, 1764 states have (on average 1.3395691609977325) internal successors, (2363), 1780 states have internal predecessors, (2363), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) [2022-11-19 08:27:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-19 08:27:52,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:52,969 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:52,970 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 08:27:52,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:52,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1088791374, now seen corresponding path program 1 times [2022-11-19 08:27:52,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:52,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467597719] [2022-11-19 08:27:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2022-11-19 08:27:54,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:54,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467597719] [2022-11-19 08:27:54,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467597719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:54,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:54,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:27:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913190315] [2022-11-19 08:27:54,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:27:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:55,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:27:55,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:27:55,033 INFO L87 Difference]: Start difference. First operand has 2804 states, 1764 states have (on average 1.3395691609977325) internal successors, (2363), 1780 states have internal predecessors, (2363), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-19 08:28:02,824 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 08:28:05,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:07,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:11,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:15,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:18,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:19,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:19,309 INFO L93 Difference]: Finished difference Result 7870 states and 11530 transitions. [2022-11-19 08:28:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:28:19,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 183 [2022-11-19 08:28:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:19,395 INFO L225 Difference]: With dead ends: 7870 [2022-11-19 08:28:19,395 INFO L226 Difference]: Without dead ends: 5089 [2022-11-19 08:28:19,423 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 08:28:19,432 INFO L413 NwaCegarLoop]: 4435 mSDtfsCounter, 3358 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 8120 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:19,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3363 Valid, 8120 Invalid, 777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 758 Invalid, 5 Unknown, 0 Unchecked, 23.8s Time] [2022-11-19 08:28:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2022-11-19 08:28:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5086. [2022-11-19 08:28:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 3204 states have (on average 1.3333333333333333) internal successors, (4272), 3235 states have internal predecessors, (4272), 1571 states have call successors, (1571), 311 states have call predecessors, (1571), 309 states have return successors, (1571), 1563 states have call predecessors, (1571), 1568 states have call successors, (1571) [2022-11-19 08:28:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 7414 transitions. [2022-11-19 08:28:19,886 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 7414 transitions. Word has length 183 [2022-11-19 08:28:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:19,890 INFO L495 AbstractCegarLoop]: Abstraction has 5086 states and 7414 transitions. [2022-11-19 08:28:19,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-19 08:28:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 7414 transitions. [2022-11-19 08:28:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-19 08:28:19,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:19,908 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:28:19,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash 339958065, now seen corresponding path program 1 times [2022-11-19 08:28:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:19,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279292524] [2022-11-19 08:28:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2022-11-19 08:28:21,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:21,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279292524] [2022-11-19 08:28:21,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279292524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:21,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:21,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:28:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150697465] [2022-11-19 08:28:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:21,405 INFO L87 Difference]: Start difference. First operand 5086 states and 7414 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:28:24,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:26,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:28,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:33,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:38,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:42,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:45,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:46,038 INFO L93 Difference]: Finished difference Result 11059 states and 16128 transitions. [2022-11-19 08:28:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:28:46,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 198 [2022-11-19 08:28:46,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:46,091 INFO L225 Difference]: With dead ends: 11059 [2022-11-19 08:28:46,091 INFO L226 Difference]: Without dead ends: 6006 [2022-11-19 08:28:46,120 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 08:28:46,123 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 2382 mSDsluCounter, 3678 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 8010 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:46,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 8010 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 782 Invalid, 4 Unknown, 0 Unchecked, 24.3s Time] [2022-11-19 08:28:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6006 states. [2022-11-19 08:28:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6006 to 5999. [2022-11-19 08:28:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 3843 states have (on average 1.3390580275826178) internal successors, (5146), 3869 states have internal predecessors, (5146), 1791 states have call successors, (1791), 366 states have call predecessors, (1791), 363 states have return successors, (1790), 1781 states have call predecessors, (1790), 1788 states have call successors, (1790) [2022-11-19 08:28:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 8727 transitions. [2022-11-19 08:28:46,500 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 8727 transitions. Word has length 198 [2022-11-19 08:28:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:46,501 INFO L495 AbstractCegarLoop]: Abstraction has 5999 states and 8727 transitions. [2022-11-19 08:28:46,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:28:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 8727 transitions. [2022-11-19 08:28:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-19 08:28:46,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:46,511 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:46,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:28:46,512 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 08:28:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash -246120632, now seen corresponding path program 1 times [2022-11-19 08:28:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:46,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859360203] [2022-11-19 08:28:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2022-11-19 08:28:49,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:49,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859360203] [2022-11-19 08:28:49,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859360203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:49,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:49,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:28:49,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570376822] [2022-11-19 08:28:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:49,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:28:49,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:49,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:28:49,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:28:49,325 INFO L87 Difference]: Start difference. First operand 5999 states and 8727 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 08:28:57,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:28:59,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:02,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:04,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:07,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:14,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:16,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:19,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:20,974 INFO L93 Difference]: Finished difference Result 10035 states and 14588 transitions. [2022-11-19 08:29:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:29:20,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 231 [2022-11-19 08:29:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:21,049 INFO L225 Difference]: With dead ends: 10035 [2022-11-19 08:29:21,049 INFO L226 Difference]: Without dead ends: 10012 [2022-11-19 08:29:21,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:29:21,063 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 3420 mSDsluCounter, 8125 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:21,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 12586 Invalid, 1104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1098 Invalid, 6 Unknown, 0 Unchecked, 31.1s Time] [2022-11-19 08:29:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2022-11-19 08:29:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9997. [2022-11-19 08:29:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9997 states, 6384 states have (on average 1.338659147869674) internal successors, (8546), 6436 states have internal predecessors, (8546), 2992 states have call successors, (2992), 622 states have call predecessors, (2992), 619 states have return successors, (2997), 2971 states have call predecessors, (2997), 2989 states have call successors, (2997) [2022-11-19 08:29:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9997 states to 9997 states and 14535 transitions. [2022-11-19 08:29:21,619 INFO L78 Accepts]: Start accepts. Automaton has 9997 states and 14535 transitions. Word has length 231 [2022-11-19 08:29:21,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:21,621 INFO L495 AbstractCegarLoop]: Abstraction has 9997 states and 14535 transitions. [2022-11-19 08:29:21,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 08:29:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 9997 states and 14535 transitions. [2022-11-19 08:29:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-19 08:29:21,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:21,634 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:21,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:29:21,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:21,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash -964769884, now seen corresponding path program 1 times [2022-11-19 08:29:21,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:21,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290100666] [2022-11-19 08:29:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2022-11-19 08:29:22,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:22,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290100666] [2022-11-19 08:29:22,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290100666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:22,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:22,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591682700] [2022-11-19 08:29:22,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:22,940 INFO L87 Difference]: Start difference. First operand 9997 states and 14535 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 08:29:29,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:32,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:36,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:29:40,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:42,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:45,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:49,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:51,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:53,041 INFO L93 Difference]: Finished difference Result 21552 states and 31388 transitions. [2022-11-19 08:29:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:53,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 251 [2022-11-19 08:29:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:53,144 INFO L225 Difference]: With dead ends: 21552 [2022-11-19 08:29:53,144 INFO L226 Difference]: Without dead ends: 13193 [2022-11-19 08:29:53,206 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 08:29:53,207 INFO L413 NwaCegarLoop]: 5779 mSDtfsCounter, 2309 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 9455 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:53,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 9455 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 985 Invalid, 6 Unknown, 0 Unchecked, 29.7s Time] [2022-11-19 08:29:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13193 states. [2022-11-19 08:29:54,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13193 to 13182. [2022-11-19 08:29:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13182 states, 8449 states have (on average 1.3409870990649781) internal successors, (11330), 8516 states have internal predecessors, (11330), 3918 states have call successors, (3918), 817 states have call predecessors, (3918), 813 states have return successors, (3927), 3887 states have call predecessors, (3927), 3915 states have call successors, (3927) [2022-11-19 08:29:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13182 states to 13182 states and 19175 transitions. [2022-11-19 08:29:54,187 INFO L78 Accepts]: Start accepts. Automaton has 13182 states and 19175 transitions. Word has length 251 [2022-11-19 08:29:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:54,189 INFO L495 AbstractCegarLoop]: Abstraction has 13182 states and 19175 transitions. [2022-11-19 08:29:54,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 08:29:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 13182 states and 19175 transitions. [2022-11-19 08:29:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-19 08:29:54,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:54,212 INFO L195 NwaCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:54,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:29:54,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2022665114, now seen corresponding path program 1 times [2022-11-19 08:29:54,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:54,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267955420] [2022-11-19 08:29:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-19 08:29:57,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:57,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267955420] [2022-11-19 08:29:57,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267955420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:57,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:57,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:29:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024644548] [2022-11-19 08:29:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:57,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:29:57,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:29:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:29:57,081 INFO L87 Difference]: Start difference. First operand 13182 states and 19175 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:30:00,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:03,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:05,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:09,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:13,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:17,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:20,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:25,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:32,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:35,569 INFO L93 Difference]: Finished difference Result 15895 states and 23498 transitions. [2022-11-19 08:30:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:30:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 313 [2022-11-19 08:30:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:35,675 INFO L225 Difference]: With dead ends: 15895 [2022-11-19 08:30:35,675 INFO L226 Difference]: Without dead ends: 15893 [2022-11-19 08:30:35,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:30:35,691 INFO L413 NwaCegarLoop]: 5353 mSDtfsCounter, 4801 mSDsluCounter, 9234 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 214 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5019 SdHoareTripleChecker+Valid, 14587 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:35,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5019 Valid, 14587 Invalid, 1758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [214 Valid, 1539 Invalid, 5 Unknown, 0 Unchecked, 37.8s Time] [2022-11-19 08:30:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15893 states. [2022-11-19 08:30:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15893 to 13403. [2022-11-19 08:30:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13403 states, 8585 states have (on average 1.3394292370413512) internal successors, (11499), 8654 states have internal predecessors, (11499), 3974 states have call successors, (3974), 845 states have call predecessors, (3974), 842 states have return successors, (3982), 3942 states have call predecessors, (3982), 3971 states have call successors, (3982) [2022-11-19 08:30:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13403 states to 13403 states and 19455 transitions. [2022-11-19 08:30:36,733 INFO L78 Accepts]: Start accepts. Automaton has 13403 states and 19455 transitions. Word has length 313 [2022-11-19 08:30:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:36,734 INFO L495 AbstractCegarLoop]: Abstraction has 13403 states and 19455 transitions. [2022-11-19 08:30:36,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:30:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 13403 states and 19455 transitions. [2022-11-19 08:30:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-19 08:30:36,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:36,790 INFO L195 NwaCegarLoop]: trace histogram [24, 18, 18, 18, 18, 18, 18, 11, 9, 9, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 08:30:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:30:36,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2000308996, now seen corresponding path program 1 times [2022-11-19 08:30:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:36,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112122873] [2022-11-19 08:30:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:36,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1817 trivial. 0 not checked. [2022-11-19 08:30:43,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:43,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112122873] [2022-11-19 08:30:43,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112122873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:43,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:43,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:30:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438384887] [2022-11-19 08:30:43,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:43,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:30:43,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:30:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:30:43,072 INFO L87 Difference]: Start difference. First operand 13403 states and 19455 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-19 08:30:47,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:49,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:51,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:53,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:30:56,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:59,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:02,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:06,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:07,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:10,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:13,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:16,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:18,359 INFO L93 Difference]: Finished difference Result 16474 states and 24293 transitions. [2022-11-19 08:31:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:31:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 480 [2022-11-19 08:31:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:18,442 INFO L225 Difference]: With dead ends: 16474 [2022-11-19 08:31:18,442 INFO L226 Difference]: Without dead ends: 16472 [2022-11-19 08:31:18,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:31:18,453 INFO L413 NwaCegarLoop]: 4551 mSDtfsCounter, 4262 mSDsluCounter, 5212 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 217 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4265 SdHoareTripleChecker+Valid, 9763 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:18,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4265 Valid, 9763 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1164 Invalid, 5 Unknown, 0 Unchecked, 34.6s Time] [2022-11-19 08:31:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16472 states. [2022-11-19 08:31:19,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16472 to 13987. [2022-11-19 08:31:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13987 states, 8961 states have (on average 1.3383550942975115) internal successors, (11993), 9032 states have internal predecessors, (11993), 4125 states have call successors, (4125), 902 states have call predecessors, (4125), 900 states have return successors, (4136), 4093 states have call predecessors, (4136), 4122 states have call successors, (4136) [2022-11-19 08:31:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13987 states to 13987 states and 20254 transitions. [2022-11-19 08:31:19,328 INFO L78 Accepts]: Start accepts. Automaton has 13987 states and 20254 transitions. Word has length 480 [2022-11-19 08:31:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:19,331 INFO L495 AbstractCegarLoop]: Abstraction has 13987 states and 20254 transitions. [2022-11-19 08:31:19,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2022-11-19 08:31:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 13987 states and 20254 transitions. [2022-11-19 08:31:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-19 08:31:19,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:19,390 INFO L195 NwaCegarLoop]: trace histogram [26, 18, 18, 18, 18, 18, 18, 12, 12, 11, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 08:31:19,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:31:19,391 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 08:31:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1354206175, now seen corresponding path program 1 times [2022-11-19 08:31:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:19,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186231447] [2022-11-19 08:31:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2009 trivial. 0 not checked. [2022-11-19 08:31:25,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:25,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186231447] [2022-11-19 08:31:25,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186231447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:25,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:25,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:31:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267874233] [2022-11-19 08:31:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:25,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:31:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:31:25,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:31:25,538 INFO L87 Difference]: Start difference. First operand 13987 states and 20254 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-19 08:31:29,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:32,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:33,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:35,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:37,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:31:42,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:44,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:47,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:51,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:55,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:58,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:59,938 INFO L93 Difference]: Finished difference Result 30805 states and 45403 transitions. [2022-11-19 08:31:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:31:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 515 [2022-11-19 08:31:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:00,022 INFO L225 Difference]: With dead ends: 30805 [2022-11-19 08:32:00,022 INFO L226 Difference]: Without dead ends: 18456 [2022-11-19 08:32:00,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:00,077 INFO L413 NwaCegarLoop]: 5120 mSDtfsCounter, 976 mSDsluCounter, 8750 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 241 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 13870 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:00,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 13870 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1430 Invalid, 5 Unknown, 0 Unchecked, 33.7s Time] [2022-11-19 08:32:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18456 states. [2022-11-19 08:32:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18456 to 13991. [2022-11-19 08:32:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13991 states, 8965 states have (on average 1.3382041271611824) internal successors, (11997), 9036 states have internal predecessors, (11997), 4125 states have call successors, (4125), 902 states have call predecessors, (4125), 900 states have return successors, (4136), 4093 states have call predecessors, (4136), 4122 states have call successors, (4136) [2022-11-19 08:32:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13991 states to 13991 states and 20258 transitions. [2022-11-19 08:32:01,044 INFO L78 Accepts]: Start accepts. Automaton has 13991 states and 20258 transitions. Word has length 515 [2022-11-19 08:32:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:01,045 INFO L495 AbstractCegarLoop]: Abstraction has 13991 states and 20258 transitions. [2022-11-19 08:32:01,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-19 08:32:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13991 states and 20258 transitions. [2022-11-19 08:32:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-11-19 08:32:01,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:01,095 INFO L195 NwaCegarLoop]: trace histogram [26, 18, 18, 18, 18, 18, 18, 12, 12, 11, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 08:32:01,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:32:01,095 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 08:32:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 806578153, now seen corresponding path program 1 times [2022-11-19 08:32:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:01,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589598590] [2022-11-19 08:32:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2009 trivial. 0 not checked. [2022-11-19 08:32:05,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:05,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589598590] [2022-11-19 08:32:05,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589598590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:05,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:05,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:32:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829259893] [2022-11-19 08:32:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:32:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:32:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:32:05,290 INFO L87 Difference]: Start difference. First operand 13991 states and 20258 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-19 08:32:15,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:22,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:28,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:33,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:36,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:32:41,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:47,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:51,599 INFO L93 Difference]: Finished difference Result 20879 states and 30480 transitions. [2022-11-19 08:32:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:32:51,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 518 [2022-11-19 08:32:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:51,673 INFO L225 Difference]: With dead ends: 20879 [2022-11-19 08:32:51,673 INFO L226 Difference]: Without dead ends: 20849 [2022-11-19 08:32:51,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:32:51,684 INFO L413 NwaCegarLoop]: 5127 mSDtfsCounter, 4311 mSDsluCounter, 11718 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 225 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 16845 SdHoareTripleChecker+Invalid, 4080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:51,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4314 Valid, 16845 Invalid, 4080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [225 Valid, 3850 Invalid, 5 Unknown, 0 Unchecked, 45.3s Time] [2022-11-19 08:32:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20849 states. [2022-11-19 08:32:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20849 to 19609. [2022-11-19 08:32:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19609 states, 12561 states have (on average 1.338269246079134) internal successors, (16810), 12657 states have internal predecessors, (16810), 5797 states have call successors, (5797), 1252 states have call predecessors, (5797), 1250 states have return successors, (5814), 5758 states have call predecessors, (5814), 5794 states have call successors, (5814) [2022-11-19 08:32:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19609 states to 19609 states and 28421 transitions. [2022-11-19 08:32:52,880 INFO L78 Accepts]: Start accepts. Automaton has 19609 states and 28421 transitions. Word has length 518 [2022-11-19 08:32:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:52,881 INFO L495 AbstractCegarLoop]: Abstraction has 19609 states and 28421 transitions. [2022-11-19 08:32:52,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-19 08:32:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 19609 states and 28421 transitions. [2022-11-19 08:32:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-11-19 08:32:52,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:52,919 INFO L195 NwaCegarLoop]: trace histogram [26, 18, 18, 18, 18, 18, 18, 12, 12, 11, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 08:32:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:32:52,920 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 08:32:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1800283533, now seen corresponding path program 1 times [2022-11-19 08:32:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:52,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814046432] [2022-11-19 08:32:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:52,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2022-11-19 08:32:56,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814046432] [2022-11-19 08:32:56,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814046432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:32:56,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:32:56,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:32:56,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27344149] [2022-11-19 08:32:56,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:56,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:32:56,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:56,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:32:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:32:56,850 INFO L87 Difference]: Start difference. First operand 19609 states and 28421 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-19 08:33:01,825 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 08:33:05,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:12,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:15,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:18,199 WARN L539 Checker$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 08:33:20,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:23,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:27,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:30,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:33:32,213 INFO L93 Difference]: Finished difference Result 38151 states and 55283 transitions. [2022-11-19 08:33:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:33:32,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 521 [2022-11-19 08:33:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:33:32,465 INFO L225 Difference]: With dead ends: 38151 [2022-11-19 08:33:32,465 INFO L226 Difference]: Without dead ends: 38121 [2022-11-19 08:33:32,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:33:32,484 INFO L413 NwaCegarLoop]: 4482 mSDtfsCounter, 3422 mSDsluCounter, 8144 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 12626 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:33:32,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3425 Valid, 12626 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1084 Invalid, 7 Unknown, 0 Unchecked, 34.2s Time] [2022-11-19 08:33:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38121 states. [2022-11-19 08:33:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38121 to 38121. [2022-11-19 08:33:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38121 states, 24395 states have (on average 1.3365443738471) internal successors, (32605), 24576 states have internal predecessors, (32605), 11293 states have call successors, (11293), 2434 states have call predecessors, (11293), 2432 states have return successors, (11330), 11226 states have call predecessors, (11330), 11290 states have call successors, (11330) [2022-11-19 08:33:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38121 states to 38121 states and 55228 transitions. [2022-11-19 08:33:34,726 INFO L78 Accepts]: Start accepts. Automaton has 38121 states and 55228 transitions. Word has length 521 [2022-11-19 08:33:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:33:34,727 INFO L495 AbstractCegarLoop]: Abstraction has 38121 states and 55228 transitions. [2022-11-19 08:33:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-19 08:33:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 38121 states and 55228 transitions. [2022-11-19 08:33:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-11-19 08:33:34,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:33:34,838 INFO L195 NwaCegarLoop]: trace histogram [27, 18, 18, 18, 18, 18, 18, 12, 12, 11, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 08:33:34,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:33:34,838 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 08:33:34,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:33:34,839 INFO L85 PathProgramCache]: Analyzing trace with hash 803745448, now seen corresponding path program 1 times [2022-11-19 08:33:34,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:33:34,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518568923] [2022-11-19 08:33:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:33:34,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:33:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:33:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2105 trivial. 0 not checked. [2022-11-19 08:33:37,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:33:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518568923] [2022-11-19 08:33:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518568923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:33:37,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:33:37,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:33:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904059532] [2022-11-19 08:33:37,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:33:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:33:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:33:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:33:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:33:37,461 INFO L87 Difference]: Start difference. First operand 38121 states and 55228 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 3 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) [2022-11-19 08:33:42,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:46,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:48,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:50,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:33:52,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:55,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:33:58,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:02,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:05,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:06,170 INFO L93 Difference]: Finished difference Result 107015 states and 154984 transitions. [2022-11-19 08:34:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:34:06,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 3 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) Word has length 585 [2022-11-19 08:34:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:06,571 INFO L225 Difference]: With dead ends: 107015 [2022-11-19 08:34:06,571 INFO L226 Difference]: Without dead ends: 68927 [2022-11-19 08:34:06,777 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 08:34:06,778 INFO L413 NwaCegarLoop]: 4497 mSDtfsCounter, 3323 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 5 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3328 SdHoareTripleChecker+Valid, 8203 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:06,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3328 Valid, 8203 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 730 Invalid, 7 Unknown, 0 Unchecked, 26.4s Time] [2022-11-19 08:34:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68927 states. [2022-11-19 08:34:09,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68927 to 68882. [2022-11-19 08:34:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68882 states, 44001 states have (on average 1.3347196654621485) internal successors, (58729), 44366 states have internal predecessors, (58729), 20441 states have call successors, (20441), 4458 states have call predecessors, (20441), 4439 states have return successors, (20515), 20278 states have call predecessors, (20515), 20438 states have call successors, (20515) [2022-11-19 08:34:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68882 states to 68882 states and 99685 transitions. [2022-11-19 08:34:10,592 INFO L78 Accepts]: Start accepts. Automaton has 68882 states and 99685 transitions. Word has length 585 [2022-11-19 08:34:10,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:10,593 INFO L495 AbstractCegarLoop]: Abstraction has 68882 states and 99685 transitions. [2022-11-19 08:34:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 3 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) [2022-11-19 08:34:10,594 INFO L276 IsEmpty]: Start isEmpty. Operand 68882 states and 99685 transitions. [2022-11-19 08:34:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-11-19 08:34:10,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:10,762 INFO L195 NwaCegarLoop]: trace histogram [27, 18, 18, 18, 18, 18, 18, 12, 12, 11, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 08:34:10,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:34:10,763 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 08:34:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash -12601803, now seen corresponding path program 1 times [2022-11-19 08:34:10,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:10,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979128635] [2022-11-19 08:34:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:10,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2022-11-19 08:34:13,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:13,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979128635] [2022-11-19 08:34:13,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979128635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:13,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:13,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:34:13,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394385708] [2022-11-19 08:34:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:13,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:34:13,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:34:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:13,730 INFO L87 Difference]: Start difference. First operand 68882 states and 99685 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) [2022-11-19 08:34:21,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:34:24,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:26,478 WARN L539 Checker$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 08:34:27,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:30,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:33,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:37,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:39,457 INFO L93 Difference]: Finished difference Result 136277 states and 197282 transitions. [2022-11-19 08:34:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:34:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) Word has length 584 [2022-11-19 08:34:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:39,936 INFO L225 Difference]: With dead ends: 136277 [2022-11-19 08:34:39,936 INFO L226 Difference]: Without dead ends: 91422 [2022-11-19 08:34:40,042 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 08:34:40,043 INFO L413 NwaCegarLoop]: 4500 mSDtfsCounter, 3354 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3357 SdHoareTripleChecker+Valid, 8206 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:40,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3357 Valid, 8206 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 734 Invalid, 4 Unknown, 0 Unchecked, 22.5s Time] [2022-11-19 08:34:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91422 states. [2022-11-19 08:34:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91422 to 91379. [2022-11-19 08:34:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91379 states, 58295 states have (on average 1.3332532807273352) internal successors, (77722), 58797 states have internal predecessors, (77722), 27185 states have call successors, (27185), 5913 states have call predecessors, (27185), 5898 states have return successors, (27283), 26961 states have call predecessors, (27283), 27182 states have call successors, (27283) [2022-11-19 08:34:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91379 states to 91379 states and 132190 transitions. [2022-11-19 08:34:44,510 INFO L78 Accepts]: Start accepts. Automaton has 91379 states and 132190 transitions. Word has length 584 [2022-11-19 08:34:44,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:44,511 INFO L495 AbstractCegarLoop]: Abstraction has 91379 states and 132190 transitions. [2022-11-19 08:34:44,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) [2022-11-19 08:34:44,512 INFO L276 IsEmpty]: Start isEmpty. Operand 91379 states and 132190 transitions. [2022-11-19 08:34:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-11-19 08:34:44,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:44,650 INFO L195 NwaCegarLoop]: trace histogram [28, 18, 18, 18, 18, 18, 18, 13, 13, 11, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 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 08:34:44,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:34:44,650 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 08:34:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1285319646, now seen corresponding path program 1 times [2022-11-19 08:34:44,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543873968] [2022-11-19 08:34:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:44,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 2203 trivial. 0 not checked. [2022-11-19 08:34:47,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:47,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543873968] [2022-11-19 08:34:47,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543873968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:47,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:47,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:34:47,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684017516] [2022-11-19 08:34:47,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:47,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:34:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:34:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:34:47,225 INFO L87 Difference]: Start difference. First operand 91379 states and 132190 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 3 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2022-11-19 08:34:50,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:34:54,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:35:01,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:02,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:05,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:09,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:12,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:16,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:19,486 INFO L93 Difference]: Finished difference Result 214393 states and 310195 transitions. [2022-11-19 08:35:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:19,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 3 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 606 [2022-11-19 08:35:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:20,162 INFO L225 Difference]: With dead ends: 214393 [2022-11-19 08:35:20,162 INFO L226 Difference]: Without dead ends: 124609 [2022-11-19 08:35:20,369 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 08:35:20,372 INFO L413 NwaCegarLoop]: 6787 mSDtfsCounter, 3392 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 10491 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:20,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 10491 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1059 Invalid, 4 Unknown, 0 Unchecked, 27.8s Time] [2022-11-19 08:35:20,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124609 states. [2022-11-19 08:35:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124609 to 124564. [2022-11-19 08:35:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124564 states, 79435 states have (on average 1.3328507584817775) internal successors, (105875), 80144 states have internal predecessors, (105875), 37083 states have call successors, (37083), 8060 states have call predecessors, (37083), 8045 states have return successors, (37219), 36760 states have call predecessors, (37219), 37080 states have call successors, (37219) [2022-11-19 08:35:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124564 states to 124564 states and 180177 transitions. [2022-11-19 08:35:26,492 INFO L78 Accepts]: Start accepts. Automaton has 124564 states and 180177 transitions. Word has length 606 [2022-11-19 08:35:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:26,493 INFO L495 AbstractCegarLoop]: Abstraction has 124564 states and 180177 transitions. [2022-11-19 08:35:26,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 3 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2022-11-19 08:35:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 124564 states and 180177 transitions. [2022-11-19 08:35:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-11-19 08:35:27,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:27,062 INFO L195 NwaCegarLoop]: trace histogram [28, 18, 18, 18, 18, 18, 18, 13, 13, 11, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 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 08:35:27,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:35:27,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash 107655058, now seen corresponding path program 2 times [2022-11-19 08:35:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:27,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253570908] [2022-11-19 08:35:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 2182 trivial. 0 not checked. [2022-11-19 08:35:29,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:29,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253570908] [2022-11-19 08:35:29,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253570908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:29,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:29,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812284082] [2022-11-19 08:35:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:29,454 INFO L87 Difference]: Start difference. First operand 124564 states and 180177 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 3 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2022-11-19 08:35:33,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:35,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:35:38,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:35:46,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:51,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:55,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:59,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:03,157 INFO L93 Difference]: Finished difference Result 236411 states and 342006 transitions. [2022-11-19 08:36:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:36:03,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 3 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 606 [2022-11-19 08:36:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:03,807 INFO L225 Difference]: With dead ends: 236411 [2022-11-19 08:36:03,807 INFO L226 Difference]: Without dead ends: 147498 [2022-11-19 08:36:04,055 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 08:36:04,056 INFO L413 NwaCegarLoop]: 6840 mSDtfsCounter, 3341 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 10544 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:04,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3346 Valid, 10544 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1053 Invalid, 6 Unknown, 0 Unchecked, 28.1s Time] [2022-11-19 08:36:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147498 states.