./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh --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 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- 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-2329fc7 [2022-12-14 04:56:00,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:56:00,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:56:00,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:56:00,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:56:00,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:56:00,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:56:00,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:56:00,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:56:00,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:56:00,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:56:00,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:56:00,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:56:00,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:56:00,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:56:00,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:56:00,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:56:00,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:56:00,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:56:00,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:56:00,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:56:00,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:56:00,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:56:00,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:56:00,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:56:00,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:56:00,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:56:00,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:56:00,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:56:00,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:56:00,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:56:00,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:56:00,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:56:00,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:56:00,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:56:00,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:56:00,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:56:00,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:56:00,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:56:00,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:56:00,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:56:00,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:56:00,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:56:00,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:56:00,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:56:00,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:56:00,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:56:00,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:56:00,979 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:56:00,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:56:00,979 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:56:00,979 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:56:00,979 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:56:00,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:56:00,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:56:00,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:56:00,980 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:56:00,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:56:00,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:56:00,980 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:56:00,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:56:00,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:56:00,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:56:00,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:56:00,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:56:00,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:56:00,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:56:00,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:56:00,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:56:00,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:56:00,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:56:00,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:56:00,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:56:00,982 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:56:00,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:56:00,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:56:00,983 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:56:00,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:56:00,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:56:00,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:56:00,983 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_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2022-12-14 04:56:01,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:56:01,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:56:01,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:56:01,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:56:01,182 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:56:01,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-12-14 04:56:03,754 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:56:04,109 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:56:04,110 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-12-14 04:56:04,137 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/data/b29cfa6c7/825a0eb1beab4b7685647ca0b3e26de1/FLAGa84af12d2 [2022-12-14 04:56:04,332 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/data/b29cfa6c7/825a0eb1beab4b7685647ca0b3e26de1 [2022-12-14 04:56:04,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:56:04,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:56:04,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:56:04,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:56:04,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:56:04,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:56:04" (1/1) ... [2022-12-14 04:56:04,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd449ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:04, skipping insertion in model container [2022-12-14 04:56:04,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:56:04" (1/1) ... [2022-12-14 04:56:04,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:56:04,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:56:04,822 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 04:56:05,174 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 04:56:05,177 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-12-14 04:56:05,180 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 04:56:05,183 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-12-14 04:56:05,186 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 04:56:05,236 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 04:56:05,273 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 04:56:05,274 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 04:56:05,275 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 04:56:05,279 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 04:56:05,280 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 04:56:05,280 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 04:56:05,377 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,377 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,382 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,384 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,386 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,387 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,387 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,389 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,393 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,393 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,394 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,395 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,397 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,399 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,400 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,401 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,403 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,404 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,404 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,405 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,407 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-12-14 04:56:05,408 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-12-14 04:56:05,408 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-12-14 04:56:05,410 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 04:56:05,411 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 04:56:05,411 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 04:56:05,413 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,414 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,414 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,414 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,414 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,415 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,420 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_get_interface [2022-12-14 04:56:05,420 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 04:56:05,421 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 04:56:05,422 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:56:05,422 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 04:56:05,424 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,425 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,426 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,427 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,427 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,427 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,431 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,431 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,436 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 04:56:05,437 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 04:56:05,438 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:56:05,438 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 04:56:05,441 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,446 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 04:56:05,447 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 04:56:05,447 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:56:05,447 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 04:56:05,448 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,451 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,456 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_get_interface [2022-12-14 04:56:05,456 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,457 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,457 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,458 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,463 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,464 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 04:56:05,471 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,472 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,473 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,476 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 04:56:05,477 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 04:56:05,477 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 04:56:05,477 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 04:56:05,478 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 04:56:05,478 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 04:56:05,479 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 04:56:05,480 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 04:56:05,480 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 04:56:05,483 WARN L623 FunctionHandler]: Unknown extern function usb_register_dev [2022-12-14 04:56:05,483 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 04:56:05,483 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-14 04:56:05,486 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_get_interface [2022-12-14 04:56:05,487 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,490 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,491 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,492 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,497 WARN L623 FunctionHandler]: Unknown extern function usb_deregister_dev [2022-12-14 04:56:05,497 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,498 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,498 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-14 04:56:05,499 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,503 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,507 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,507 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,511 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,514 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,533 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 04:56:05,536 WARN L623 FunctionHandler]: Unknown extern function noop_llseek [2022-12-14 04:56:05,539 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 04:56:05,539 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 04:56:05,540 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 04:56:05,540 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-14 04:56:05,540 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 04:56:05,540 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,541 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,541 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,541 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,541 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,542 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 04:56:05,542 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,542 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 04:56:05,543 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,543 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,543 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 04:56:05,543 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,544 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,544 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,544 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,544 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,544 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,545 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,545 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,545 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,545 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,546 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,546 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,546 WARN L623 FunctionHandler]: Unknown extern function cancel_work_sync [2022-12-14 04:56:05,546 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,547 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,547 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,547 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,547 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,553 WARN L623 FunctionHandler]: Unknown extern function cancel_work_sync [2022-12-14 04:56:05,554 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,554 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,554 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,554 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,555 WARN L623 FunctionHandler]: Unknown extern function cancel_work_sync [2022-12-14 04:56:05,555 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,555 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,555 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-12-14 04:56:05,556 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-12-14 04:56:05,558 WARN L237 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_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2022-12-14 04:56:05,693 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 04:56:05,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:56:05,714 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:56:05,762 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 04:56:05,765 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 04:56:05,765 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-12-14 04:56:05,766 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 04:56:05,766 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-12-14 04:56:05,766 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 04:56:05,767 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 04:56:05,768 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 04:56:05,769 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 04:56:05,769 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 04:56:05,769 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 04:56:05,770 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 04:56:05,770 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 04:56:05,783 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,783 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,785 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,786 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,787 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,787 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,787 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,788 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,790 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,790 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,790 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,791 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,792 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,793 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,794 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,794 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,795 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,796 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,796 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,796 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,797 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-12-14 04:56:05,797 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-12-14 04:56:05,797 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-12-14 04:56:05,797 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 04:56:05,797 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 04:56:05,798 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 04:56:05,798 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,798 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,798 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,798 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,798 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,798 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,800 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_get_interface [2022-12-14 04:56:05,801 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 04:56:05,801 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 04:56:05,801 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:56:05,801 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 04:56:05,802 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,803 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,804 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,804 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,804 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,804 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 04:56:05,805 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,805 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,817 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 04:56:05,817 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 04:56:05,818 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:56:05,818 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 04:56:05,820 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,824 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 04:56:05,824 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 04:56:05,825 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:56:05,825 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 04:56:05,825 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,826 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,828 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_get_interface [2022-12-14 04:56:05,828 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,829 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,830 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,830 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,833 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,834 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 04:56:05,837 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,838 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,838 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,840 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 04:56:05,840 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 04:56:05,840 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 04:56:05,841 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 04:56:05,841 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 04:56:05,842 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 04:56:05,843 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 04:56:05,843 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 04:56:05,843 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 04:56:05,846 WARN L623 FunctionHandler]: Unknown extern function usb_register_dev [2022-12-14 04:56:05,846 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 04:56:05,847 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-14 04:56:05,848 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_get_interface [2022-12-14 04:56:05,849 WARN L623 FunctionHandler]: Unknown extern function usb_autopm_put_interface [2022-12-14 04:56:05,850 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,852 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,852 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,855 WARN L623 FunctionHandler]: Unknown extern function usb_deregister_dev [2022-12-14 04:56:05,856 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:56:05,856 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,857 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-14 04:56:05,858 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,860 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,862 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 04:56:05,862 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:56:05,864 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:56:05,865 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 04:56:05,873 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 04:56:05,876 WARN L623 FunctionHandler]: Unknown extern function noop_llseek [2022-12-14 04:56:05,878 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 04:56:05,878 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 04:56:05,879 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 04:56:05,879 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-14 04:56:05,879 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 04:56:05,880 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,880 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,880 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,880 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,880 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,881 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 04:56:05,881 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,882 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 04:56:05,882 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,883 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,883 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_interruptible [2022-12-14 04:56:05,883 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,884 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,884 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,884 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,885 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,885 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,885 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,885 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,886 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,886 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,886 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,887 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,887 WARN L623 FunctionHandler]: Unknown extern function cancel_work_sync [2022-12-14 04:56:05,887 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,888 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,888 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,888 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,889 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,889 WARN L623 FunctionHandler]: Unknown extern function cancel_work_sync [2022-12-14 04:56:05,889 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,889 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,889 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,890 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:56:05,890 WARN L623 FunctionHandler]: Unknown extern function cancel_work_sync [2022-12-14 04:56:05,890 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,890 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:56:05,891 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-12-14 04:56:05,891 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-12-14 04:56:05,891 WARN L237 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_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2022-12-14 04:56:05,905 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 04:56:05,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:56:05,952 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:56:05,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05 WrapperNode [2022-12-14 04:56:05,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:56:05,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:56:05,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:56:05,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:56:05,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,089 INFO L138 Inliner]: procedures = 282, calls = 1511, calls flagged for inlining = 101, calls inlined = 84, statements flattened = 2705 [2022-12-14 04:56:06,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:56:06,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:56:06,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:56:06,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:56:06,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:56:06,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:56:06,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:56:06,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:56:06,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (1/1) ... [2022-12-14 04:56:06,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:56:06,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:06,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:56:06,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:56:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-12-14 04:56:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-12-14 04:56:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-12-14 04:56:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-12-14 04:56:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 04:56:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 04:56:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 04:56:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 04:56:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wdm_mutex [2022-12-14 04:56:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wdm_mutex [2022-12-14 04:56:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure recover_from_urb_loss [2022-12-14 04:56:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_from_urb_loss [2022-12-14 04:56:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-12-14 04:56:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-12-14 04:56:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 04:56:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 04:56:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-12-14 04:56:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-12-14 04:56:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-12-14 04:56:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-12-14 04:56:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-12-14 04:56:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-12-14 04:56:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_create [2022-12-14 04:56:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_create [2022-12-14 04:56:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-12-14 04:56:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-12-14 04:56:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-14 04:56:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-14 04:56:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_poll [2022-12-14 04:56:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_poll [2022-12-14 04:56:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-12-14 04:56:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-12-14 04:56:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 04:56:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 04:56:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-12-14 04:56:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-12-14 04:56:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-12-14 04:56:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-12-14 04:56:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure clear_wdm_read_flag [2022-12-14 04:56:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_wdm_read_flag [2022-12-14 04:56:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cancel_work_sync_39 [2022-12-14 04:56:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cancel_work_sync_39 [2022-12-14 04:56:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_write [2022-12-14 04:56:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_write [2022-12-14 04:56:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:56:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-12-14 04:56:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-12-14 04:56:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_ioctl [2022-12-14 04:56:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_ioctl [2022-12-14 04:56:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_disconnect [2022-12-14 04:56:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_disconnect [2022-12-14 04:56:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:56:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_rlock_of_wdm_device [2022-12-14 04:56:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_rlock_of_wdm_device [2022-12-14 04:56:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-12-14 04:56:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-12-14 04:56:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-12-14 04:56:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-12-14 04:56:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_rxwork [2022-12-14 04:56:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_rxwork [2022-12-14 04:56:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:56:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-12-14 04:56:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-12-14 04:56:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:56:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-12-14 04:56:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-12-14 04:56:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-12-14 04:56:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-12-14 04:56:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-12-14 04:56:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-12-14 04:56:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-12-14 04:56:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-12-14 04:56:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-12-14 04:56:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-12-14 04:56:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-12-14 04:56:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-12-14 04:56:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-12-14 04:56:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-12-14 04:56:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wdm_mutex [2022-12-14 04:56:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wdm_mutex [2022-12-14 04:56:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wlock_of_wdm_device [2022-12-14 04:56:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wlock_of_wdm_device [2022-12-14 04:56:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-12-14 04:56:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-12-14 04:56:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-12-14 04:56:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-12-14 04:56:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-12-14 04:56:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-12-14 04:56:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_flush [2022-12-14 04:56:06,264 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_flush [2022-12-14 04:56:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wlock_of_wdm_device [2022-12-14 04:56:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wlock_of_wdm_device [2022-12-14 04:56:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-12-14 04:56:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-12-14 04:56:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 04:56:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-12-14 04:56:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-12-14 04:56:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:56:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-12-14 04:56:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-12-14 04:56:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 04:56:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 04:56:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-12-14 04:56:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-12-14 04:56:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure kill_urbs [2022-12-14 04:56:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_urbs [2022-12-14 04:56:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-12-14 04:56:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-12-14 04:56:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 04:56:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 04:56:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:56:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-12-14 04:56:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-12-14 04:56:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-12-14 04:56:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-12-14 04:56:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 04:56:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 04:56:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-12-14 04:56:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-12-14 04:56:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_resume [2022-12-14 04:56:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_resume [2022-12-14 04:56:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:56:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-12-14 04:56:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-12-14 04:56:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-12-14 04:56:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-12-14 04:56:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:56:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 04:56:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 04:56:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:56:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-12-14 04:56:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-12-14 04:56:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-12-14 04:56:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-12-14 04:56:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-12-14 04:56:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-12-14 04:56:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 04:56:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 04:56:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_rlock_of_wdm_device [2022-12-14 04:56:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_rlock_of_wdm_device [2022-12-14 04:56:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-12-14 04:56:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-12-14 04:56:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_find_device [2022-12-14 04:56:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_find_device [2022-12-14 04:56:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-12-14 04:56:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-12-14 04:56:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-12-14 04:56:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-12-14 04:56:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:56:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-12-14 04:56:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-12-14 04:56:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-12-14 04:56:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-12-14 04:56:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:56:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:56:06,619 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:56:06,621 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:56:07,003 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 04:56:10,259 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:56:10,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:56:10,618 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 04:56:10,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:56:10 BoogieIcfgContainer [2022-12-14 04:56:10,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:56:10,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:56:10,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:56:10,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:56:10,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:56:04" (1/3) ... [2022-12-14 04:56:10,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7311160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:56:10, skipping insertion in model container [2022-12-14 04:56:10,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:05" (2/3) ... [2022-12-14 04:56:10,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7311160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:56:10, skipping insertion in model container [2022-12-14 04:56:10,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:56:10" (3/3) ... [2022-12-14 04:56:10,627 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-12-14 04:56:10,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:56:10,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:56:10,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:56:10,694 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;@20d6fa0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:56:10,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:56:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 861 states, 488 states have (on average 1.3176229508196722) internal successors, (643), 521 states have internal predecessors, (643), 301 states have call successors, (301), 71 states have call predecessors, (301), 70 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2022-12-14 04:56:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 04:56:10,710 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:10,710 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:10,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash 459657191, now seen corresponding path program 1 times [2022-12-14 04:56:10,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:10,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251314144] [2022-12-14 04:56:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-12-14 04:56:11,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:11,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251314144] [2022-12-14 04:56:11,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251314144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:11,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:11,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747695024] [2022-12-14 04:56:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:11,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:11,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:11,295 INFO L87 Difference]: Start difference. First operand has 861 states, 488 states have (on average 1.3176229508196722) internal successors, (643), 521 states have internal predecessors, (643), 301 states have call successors, (301), 71 states have call predecessors, (301), 70 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-14 04:56:13,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:56:14,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:56:17,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:56:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:17,593 INFO L93 Difference]: Finished difference Result 2474 states and 3610 transitions. [2022-12-14 04:56:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2022-12-14 04:56:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:17,616 INFO L225 Difference]: With dead ends: 2474 [2022-12-14 04:56:17,616 INFO L226 Difference]: Without dead ends: 1635 [2022-12-14 04:56:17,622 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 [2022-12-14 04:56:17,624 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 1116 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:17,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2462 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 244 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 04:56:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2022-12-14 04:56:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1624. [2022-12-14 04:56:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 933 states have (on average 1.3054662379421222) internal successors, (1218), 973 states have internal predecessors, (1218), 553 states have call successors, (553), 138 states have call predecessors, (553), 137 states have return successors, (540), 536 states have call predecessors, (540), 539 states have call successors, (540) [2022-12-14 04:56:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2311 transitions. [2022-12-14 04:56:17,739 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2311 transitions. Word has length 140 [2022-12-14 04:56:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:17,739 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2311 transitions. [2022-12-14 04:56:17,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-14 04:56:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2311 transitions. [2022-12-14 04:56:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-14 04:56:17,742 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:17,742 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:17,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:56:17,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash 464599916, now seen corresponding path program 1 times [2022-12-14 04:56:17,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:17,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492616874] [2022-12-14 04:56:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-12-14 04:56:17,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:17,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492616874] [2022-12-14 04:56:17,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492616874] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:17,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:17,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133987674] [2022-12-14 04:56:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:17,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:17,951 INFO L87 Difference]: Start difference. First operand 1624 states and 2311 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:21,506 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 [] [2022-12-14 04:56:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:21,539 INFO L93 Difference]: Finished difference Result 4046 states and 5690 transitions. [2022-12-14 04:56:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2022-12-14 04:56:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:21,555 INFO L225 Difference]: With dead ends: 4046 [2022-12-14 04:56:21,555 INFO L226 Difference]: Without dead ends: 2458 [2022-12-14 04:56:21,562 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 [2022-12-14 04:56:21,563 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 620 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:21,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 2240 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 04:56:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2022-12-14 04:56:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2427. [2022-12-14 04:56:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1394 states have (on average 1.2984218077474892) internal successors, (1810), 1441 states have internal predecessors, (1810), 797 states have call successors, (797), 236 states have call predecessors, (797), 235 states have return successors, (786), 777 states have call predecessors, (786), 783 states have call successors, (786) [2022-12-14 04:56:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3393 transitions. [2022-12-14 04:56:21,656 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3393 transitions. Word has length 145 [2022-12-14 04:56:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:21,657 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 3393 transitions. [2022-12-14 04:56:21,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3393 transitions. [2022-12-14 04:56:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 04:56:21,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:21,659 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:21,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:56:21,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1885517233, now seen corresponding path program 1 times [2022-12-14 04:56:21,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:21,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364116208] [2022-12-14 04:56:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:21,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-12-14 04:56:21,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:21,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364116208] [2022-12-14 04:56:21,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364116208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:21,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:21,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:21,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978659540] [2022-12-14 04:56:21,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:21,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:21,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:21,876 INFO L87 Difference]: Start difference. First operand 2427 states and 3393 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:25,106 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 [] [2022-12-14 04:56:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:25,235 INFO L93 Difference]: Finished difference Result 2473 states and 3442 transitions. [2022-12-14 04:56:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-12-14 04:56:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:25,243 INFO L225 Difference]: With dead ends: 2473 [2022-12-14 04:56:25,244 INFO L226 Difference]: Without dead ends: 2470 [2022-12-14 04:56:25,245 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 [2022-12-14 04:56:25,246 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 1144 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:25,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1159 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 04:56:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-12-14 04:56:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2470. [2022-12-14 04:56:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1415 states have (on average 1.2932862190812722) internal successors, (1830), 1462 states have internal predecessors, (1830), 809 states have call successors, (809), 245 states have call predecessors, (809), 245 states have return successors, (800), 790 states have call predecessors, (800), 796 states have call successors, (800) [2022-12-14 04:56:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3439 transitions. [2022-12-14 04:56:25,330 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3439 transitions. Word has length 155 [2022-12-14 04:56:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:25,331 INFO L495 AbstractCegarLoop]: Abstraction has 2470 states and 3439 transitions. [2022-12-14 04:56:25,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3439 transitions. [2022-12-14 04:56:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-14 04:56:25,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:25,333 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:25,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:56:25,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1313533151, now seen corresponding path program 1 times [2022-12-14 04:56:25,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:25,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978434056] [2022-12-14 04:56:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:25,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-12-14 04:56:25,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:25,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978434056] [2022-12-14 04:56:25,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978434056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:25,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:25,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282225108] [2022-12-14 04:56:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:25,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:25,524 INFO L87 Difference]: Start difference. First operand 2470 states and 3439 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 04:56:28,817 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 [] [2022-12-14 04:56:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:28,846 INFO L93 Difference]: Finished difference Result 6185 states and 8597 transitions. [2022-12-14 04:56:28,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:28,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2022-12-14 04:56:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:28,860 INFO L225 Difference]: With dead ends: 6185 [2022-12-14 04:56:28,860 INFO L226 Difference]: Without dead ends: 3759 [2022-12-14 04:56:28,867 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 [2022-12-14 04:56:28,867 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 834 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:28,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2593 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 291 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 04:56:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-12-14 04:56:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3736. [2022-12-14 04:56:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 2180 states have (on average 1.3004587155963303) internal successors, (2835), 2255 states have internal predecessors, (2835), 1181 states have call successors, (1181), 374 states have call predecessors, (1181), 374 states have return successors, (1172), 1158 states have call predecessors, (1172), 1168 states have call successors, (1172) [2022-12-14 04:56:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5188 transitions. [2022-12-14 04:56:28,995 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5188 transitions. Word has length 162 [2022-12-14 04:56:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:28,996 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 5188 transitions. [2022-12-14 04:56:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 04:56:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5188 transitions. [2022-12-14 04:56:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-14 04:56:28,997 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:28,998 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:56:28,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1678014823, now seen corresponding path program 1 times [2022-12-14 04:56:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:28,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644974934] [2022-12-14 04:56:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-12-14 04:56:29,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:29,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644974934] [2022-12-14 04:56:29,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644974934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:29,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:29,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104098901] [2022-12-14 04:56:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:29,189 INFO L87 Difference]: Start difference. First operand 3736 states and 5188 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:31,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:56:33,513 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 [] [2022-12-14 04:56:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:33,588 INFO L93 Difference]: Finished difference Result 3738 states and 5189 transitions. [2022-12-14 04:56:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:33,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2022-12-14 04:56:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:33,599 INFO L225 Difference]: With dead ends: 3738 [2022-12-14 04:56:33,599 INFO L226 Difference]: Without dead ends: 3735 [2022-12-14 04:56:33,601 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 [2022-12-14 04:56:33,601 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 1141 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:33,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1157 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 04:56:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2022-12-14 04:56:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3735. [2022-12-14 04:56:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 2180 states have (on average 1.3) internal successors, (2834), 2254 states have internal predecessors, (2834), 1180 states have call successors, (1180), 374 states have call predecessors, (1180), 374 states have return successors, (1172), 1158 states have call predecessors, (1172), 1168 states have call successors, (1172) [2022-12-14 04:56:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 5186 transitions. [2022-12-14 04:56:33,730 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 5186 transitions. Word has length 156 [2022-12-14 04:56:33,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:33,731 INFO L495 AbstractCegarLoop]: Abstraction has 3735 states and 5186 transitions. [2022-12-14 04:56:33,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 5186 transitions. [2022-12-14 04:56:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 04:56:33,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:33,732 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:33,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 04:56:33,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash 478363730, now seen corresponding path program 1 times [2022-12-14 04:56:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:33,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986490600] [2022-12-14 04:56:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-12-14 04:56:33,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:33,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986490600] [2022-12-14 04:56:33,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986490600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:33,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:33,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988822142] [2022-12-14 04:56:33,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:33,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:33,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:33,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:33,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:33,916 INFO L87 Difference]: Start difference. First operand 3735 states and 5186 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:35,953 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 [] [2022-12-14 04:56:38,331 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 [] [2022-12-14 04:56:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:38,460 INFO L93 Difference]: Finished difference Result 3737 states and 5187 transitions. [2022-12-14 04:56:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:38,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2022-12-14 04:56:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:38,471 INFO L225 Difference]: With dead ends: 3737 [2022-12-14 04:56:38,471 INFO L226 Difference]: Without dead ends: 3734 [2022-12-14 04:56:38,473 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 [2022-12-14 04:56:38,473 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 1138 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:38,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1155 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 04:56:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-12-14 04:56:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3734. [2022-12-14 04:56:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 2180 states have (on average 1.2995412844036698) internal successors, (2833), 2253 states have internal predecessors, (2833), 1179 states have call successors, (1179), 374 states have call predecessors, (1179), 374 states have return successors, (1172), 1158 states have call predecessors, (1172), 1168 states have call successors, (1172) [2022-12-14 04:56:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5184 transitions. [2022-12-14 04:56:38,614 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5184 transitions. Word has length 157 [2022-12-14 04:56:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:38,614 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5184 transitions. [2022-12-14 04:56:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5184 transitions. [2022-12-14 04:56:38,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 04:56:38,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:38,616 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:38,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 04:56:38,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:38,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1943890378, now seen corresponding path program 1 times [2022-12-14 04:56:38,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:38,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146838765] [2022-12-14 04:56:38,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:38,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-12-14 04:56:38,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:38,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146838765] [2022-12-14 04:56:38,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146838765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:38,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:38,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:38,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367040201] [2022-12-14 04:56:38,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:38,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:38,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:38,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:38,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:38,795 INFO L87 Difference]: Start difference. First operand 3734 states and 5184 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:42,347 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 [] [2022-12-14 04:56:42,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:42,376 INFO L93 Difference]: Finished difference Result 10482 states and 14487 transitions. [2022-12-14 04:56:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2022-12-14 04:56:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:42,408 INFO L225 Difference]: With dead ends: 10482 [2022-12-14 04:56:42,408 INFO L226 Difference]: Without dead ends: 6794 [2022-12-14 04:56:42,423 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 [2022-12-14 04:56:42,423 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 954 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:42,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 2352 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 04:56:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-12-14 04:56:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 6764. [2022-12-14 04:56:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6764 states, 3977 states have (on average 1.2997234096052301) internal successors, (5169), 4103 states have internal predecessors, (5169), 2076 states have call successors, (2076), 719 states have call predecessors, (2076), 710 states have return successors, (2072), 2025 states have call predecessors, (2072), 2064 states have call successors, (2072) [2022-12-14 04:56:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6764 states to 6764 states and 9317 transitions. [2022-12-14 04:56:42,751 INFO L78 Accepts]: Start accepts. Automaton has 6764 states and 9317 transitions. Word has length 158 [2022-12-14 04:56:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:42,751 INFO L495 AbstractCegarLoop]: Abstraction has 6764 states and 9317 transitions. [2022-12-14 04:56:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6764 states and 9317 transitions. [2022-12-14 04:56:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 04:56:42,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:42,753 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:42,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 04:56:42,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash 130581077, now seen corresponding path program 1 times [2022-12-14 04:56:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:42,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263952979] [2022-12-14 04:56:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:42,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-12-14 04:56:42,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:42,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263952979] [2022-12-14 04:56:42,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263952979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:42,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:42,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63820542] [2022-12-14 04:56:42,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:42,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:42,929 INFO L87 Difference]: Start difference. First operand 6764 states and 9317 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:46,179 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 [] [2022-12-14 04:56:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:46,267 INFO L93 Difference]: Finished difference Result 7372 states and 9815 transitions. [2022-12-14 04:56:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2022-12-14 04:56:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:46,287 INFO L225 Difference]: With dead ends: 7372 [2022-12-14 04:56:46,287 INFO L226 Difference]: Without dead ends: 7368 [2022-12-14 04:56:46,289 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 [2022-12-14 04:56:46,290 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 950 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:46,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1367 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 04:56:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2022-12-14 04:56:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 7362. [2022-12-14 04:56:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7362 states, 4303 states have (on average 1.2791075993492913) internal successors, (5504), 4423 states have internal predecessors, (5504), 2146 states have call successors, (2146), 925 states have call predecessors, (2146), 912 states have return successors, (2144), 2097 states have call predecessors, (2144), 2136 states have call successors, (2144) [2022-12-14 04:56:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7362 states to 7362 states and 9794 transitions. [2022-12-14 04:56:46,572 INFO L78 Accepts]: Start accepts. Automaton has 7362 states and 9794 transitions. Word has length 159 [2022-12-14 04:56:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:46,572 INFO L495 AbstractCegarLoop]: Abstraction has 7362 states and 9794 transitions. [2022-12-14 04:56:46,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 7362 states and 9794 transitions. [2022-12-14 04:56:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-14 04:56:46,573 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:46,574 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:46,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 04:56:46,574 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash -247427539, now seen corresponding path program 1 times [2022-12-14 04:56:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:46,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738041400] [2022-12-14 04:56:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-12-14 04:56:46,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:46,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738041400] [2022-12-14 04:56:46,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738041400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:46,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:46,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123250190] [2022-12-14 04:56:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:46,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:46,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:46,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:46,739 INFO L87 Difference]: Start difference. First operand 7362 states and 9794 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:48,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:56:51,433 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 [] [2022-12-14 04:56:51,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:51,455 INFO L93 Difference]: Finished difference Result 20182 states and 26950 transitions. [2022-12-14 04:56:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:51,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 160 [2022-12-14 04:56:51,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:51,489 INFO L225 Difference]: With dead ends: 20182 [2022-12-14 04:56:51,489 INFO L226 Difference]: Without dead ends: 12859 [2022-12-14 04:56:51,507 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 [2022-12-14 04:56:51,507 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 995 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:51,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 2233 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 233 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 04:56:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12859 states. [2022-12-14 04:56:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12859 to 12802. [2022-12-14 04:56:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12802 states, 7582 states have (on average 1.2922711685571089) internal successors, (9798), 7794 states have internal predecessors, (9798), 3635 states have call successors, (3635), 1628 states have call predecessors, (3635), 1584 states have return successors, (3672), 3519 states have call predecessors, (3672), 3624 states have call successors, (3672) [2022-12-14 04:56:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12802 states to 12802 states and 17105 transitions. [2022-12-14 04:56:52,001 INFO L78 Accepts]: Start accepts. Automaton has 12802 states and 17105 transitions. Word has length 160 [2022-12-14 04:56:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:52,002 INFO L495 AbstractCegarLoop]: Abstraction has 12802 states and 17105 transitions. [2022-12-14 04:56:52,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 04:56:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 12802 states and 17105 transitions. [2022-12-14 04:56:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-12-14 04:56:52,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:52,006 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:56:52,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 04:56:52,006 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1060724891, now seen corresponding path program 1 times [2022-12-14 04:56:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:52,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068950314] [2022-12-14 04:56:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:52,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-12-14 04:56:52,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:52,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068950314] [2022-12-14 04:56:52,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068950314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:52,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:52,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020544027] [2022-12-14 04:56:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:52,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:52,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:52,211 INFO L87 Difference]: Start difference. First operand 12802 states and 17105 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 04:56:54,239 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 [] [2022-12-14 04:56:56,914 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 [] [2022-12-14 04:56:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:56,932 INFO L93 Difference]: Finished difference Result 19435 states and 25945 transitions. [2022-12-14 04:56:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:56,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 199 [2022-12-14 04:56:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:56,948 INFO L225 Difference]: With dead ends: 19435 [2022-12-14 04:56:56,948 INFO L226 Difference]: Without dead ends: 6677 [2022-12-14 04:56:56,971 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 [2022-12-14 04:56:56,972 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 12 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:56,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2174 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 04:56:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6677 states. [2022-12-14 04:56:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 6601. [2022-12-14 04:56:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6601 states, 3911 states have (on average 1.2935310662234722) internal successors, (5059), 4023 states have internal predecessors, (5059), 1870 states have call successors, (1870), 842 states have call predecessors, (1870), 819 states have return successors, (1883), 1806 states have call predecessors, (1883), 1859 states have call successors, (1883) [2022-12-14 04:56:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 8812 transitions. [2022-12-14 04:56:57,221 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 8812 transitions. Word has length 199 [2022-12-14 04:56:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:57,221 INFO L495 AbstractCegarLoop]: Abstraction has 6601 states and 8812 transitions. [2022-12-14 04:56:57,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 04:56:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 8812 transitions. [2022-12-14 04:56:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-12-14 04:56:57,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:57,224 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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] [2022-12-14 04:56:57,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 04:56:57,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:56:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1068995907, now seen corresponding path program 1 times [2022-12-14 04:56:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:57,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153691060] [2022-12-14 04:56:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-12-14 04:56:57,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:57,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153691060] [2022-12-14 04:56:57,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153691060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:57,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:57,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:57,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171485545] [2022-12-14 04:56:57,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:57,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:57,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:57,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:57,545 INFO L87 Difference]: Start difference. First operand 6601 states and 8812 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 04:57:00,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:03,690 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 [] [2022-12-14 04:57:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:57:03,709 INFO L93 Difference]: Finished difference Result 16348 states and 21746 transitions. [2022-12-14 04:57:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:57:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 205 [2022-12-14 04:57:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:57:03,729 INFO L225 Difference]: With dead ends: 16348 [2022-12-14 04:57:03,729 INFO L226 Difference]: Without dead ends: 9882 [2022-12-14 04:57:03,741 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 [2022-12-14 04:57:03,742 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 868 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:57:03,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 2491 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 302 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 04:57:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9882 states. [2022-12-14 04:57:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9882 to 9774. [2022-12-14 04:57:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9774 states, 5835 states have (on average 1.286203941730934) internal successors, (7505), 5999 states have internal predecessors, (7505), 2690 states have call successors, (2690), 1283 states have call predecessors, (2690), 1248 states have return successors, (2707), 2603 states have call predecessors, (2707), 2679 states have call successors, (2707) [2022-12-14 04:57:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 12902 transitions. [2022-12-14 04:57:04,126 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 12902 transitions. Word has length 205 [2022-12-14 04:57:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:57:04,126 INFO L495 AbstractCegarLoop]: Abstraction has 9774 states and 12902 transitions. [2022-12-14 04:57:04,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 04:57:04,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 12902 transitions. [2022-12-14 04:57:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-12-14 04:57:04,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:57:04,128 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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] [2022-12-14 04:57:04,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 04:57:04,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:57:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:57:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -672236105, now seen corresponding path program 1 times [2022-12-14 04:57:04,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:57:04,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645510967] [2022-12-14 04:57:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:57:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 04:57:04,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:57:04,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645510967] [2022-12-14 04:57:04,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645510967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:04,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:57:04,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:57:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340126731] [2022-12-14 04:57:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:04,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:57:04,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:57:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:57:04,447 INFO L87 Difference]: Start difference. First operand 9774 states and 12902 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 04:57:05,729 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 [] [2022-12-14 04:57:07,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:10,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:57:10,368 INFO L93 Difference]: Finished difference Result 9782 states and 12908 transitions. [2022-12-14 04:57:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:57:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 212 [2022-12-14 04:57:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:57:10,385 INFO L225 Difference]: With dead ends: 9782 [2022-12-14 04:57:10,386 INFO L226 Difference]: Without dead ends: 9779 [2022-12-14 04:57:10,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:57:10,388 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 248 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:57:10,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 2011 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-12-14 04:57:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9779 states. [2022-12-14 04:57:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9779 to 9773. [2022-12-14 04:57:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9773 states, 5835 states have (on average 1.2839760068551842) internal successors, (7492), 5998 states have internal predecessors, (7492), 2689 states have call successors, (2689), 1283 states have call predecessors, (2689), 1248 states have return successors, (2707), 2603 states have call predecessors, (2707), 2679 states have call successors, (2707) [2022-12-14 04:57:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 12888 transitions. [2022-12-14 04:57:10,721 INFO L78 Accepts]: Start accepts. Automaton has 9773 states and 12888 transitions. Word has length 212 [2022-12-14 04:57:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:57:10,722 INFO L495 AbstractCegarLoop]: Abstraction has 9773 states and 12888 transitions. [2022-12-14 04:57:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 04:57:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9773 states and 12888 transitions. [2022-12-14 04:57:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-12-14 04:57:10,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:57:10,724 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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] [2022-12-14 04:57:10,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 04:57:10,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:57:10,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:57:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash 918774145, now seen corresponding path program 1 times [2022-12-14 04:57:10,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:57:10,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073029058] [2022-12-14 04:57:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:57:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-12-14 04:57:11,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:57:11,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073029058] [2022-12-14 04:57:11,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073029058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:11,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:57:11,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:57:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547159651] [2022-12-14 04:57:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:57:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:57:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:57:11,031 INFO L87 Difference]: Start difference. First operand 9773 states and 12888 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-14 04:57:15,741 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 [] [2022-12-14 04:57:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:57:15,758 INFO L93 Difference]: Finished difference Result 22803 states and 30074 transitions. [2022-12-14 04:57:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:57:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 223 [2022-12-14 04:57:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:57:15,782 INFO L225 Difference]: With dead ends: 22803 [2022-12-14 04:57:15,782 INFO L226 Difference]: Without dead ends: 13165 [2022-12-14 04:57:15,796 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 [2022-12-14 04:57:15,796 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 898 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:57:15,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 2413 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 270 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 04:57:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13165 states. [2022-12-14 04:57:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13165 to 13139. [2022-12-14 04:57:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13139 states, 7973 states have (on average 1.2884735983945816) internal successors, (10273), 8202 states have internal predecessors, (10273), 3477 states have call successors, (3477), 1727 states have call predecessors, (3477), 1688 states have return successors, (3503), 3375 states have call predecessors, (3503), 3467 states have call successors, (3503) [2022-12-14 04:57:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13139 states to 13139 states and 17253 transitions. [2022-12-14 04:57:16,227 INFO L78 Accepts]: Start accepts. Automaton has 13139 states and 17253 transitions. Word has length 223 [2022-12-14 04:57:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:57:16,227 INFO L495 AbstractCegarLoop]: Abstraction has 13139 states and 17253 transitions. [2022-12-14 04:57:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-14 04:57:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13139 states and 17253 transitions. [2022-12-14 04:57:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-12-14 04:57:16,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:57:16,232 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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] [2022-12-14 04:57:16,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 04:57:16,232 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:57:16,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:57:16,232 INFO L85 PathProgramCache]: Analyzing trace with hash 519783294, now seen corresponding path program 1 times [2022-12-14 04:57:16,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:57:16,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770958730] [2022-12-14 04:57:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:16,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:57:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 04:57:16,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:57:16,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770958730] [2022-12-14 04:57:16,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770958730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:16,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:57:16,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:57:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078466978] [2022-12-14 04:57:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:16,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:57:16,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:57:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:57:16,864 INFO L87 Difference]: Start difference. First operand 13139 states and 17253 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 04:57:18,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:20,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:23,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:57:23,708 INFO L93 Difference]: Finished difference Result 31728 states and 41720 transitions. [2022-12-14 04:57:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:57:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 232 [2022-12-14 04:57:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:57:23,740 INFO L225 Difference]: With dead ends: 31728 [2022-12-14 04:57:23,740 INFO L226 Difference]: Without dead ends: 18724 [2022-12-14 04:57:23,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:57:23,758 INFO L413 NwaCegarLoop]: 1782 mSDtfsCounter, 1551 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 461 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:57:23,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 2733 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 329 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 04:57:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18724 states. [2022-12-14 04:57:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18724 to 18574. [2022-12-14 04:57:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18574 states, 11318 states have (on average 1.2930729810920658) internal successors, (14635), 11680 states have internal predecessors, (14635), 4853 states have call successors, (4853), 2436 states have call predecessors, (4853), 2402 states have return successors, (4893), 4689 states have call predecessors, (4893), 4827 states have call successors, (4893) [2022-12-14 04:57:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18574 states to 18574 states and 24381 transitions. [2022-12-14 04:57:24,487 INFO L78 Accepts]: Start accepts. Automaton has 18574 states and 24381 transitions. Word has length 232 [2022-12-14 04:57:24,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:57:24,487 INFO L495 AbstractCegarLoop]: Abstraction has 18574 states and 24381 transitions. [2022-12-14 04:57:24,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 04:57:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 18574 states and 24381 transitions. [2022-12-14 04:57:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-12-14 04:57:24,490 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:57:24,491 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 3, 3, 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] [2022-12-14 04:57:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 04:57:24,491 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:57:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:57:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash 502303576, now seen corresponding path program 1 times [2022-12-14 04:57:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:57:24,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228840063] [2022-12-14 04:57:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:57:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-12-14 04:57:25,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:57:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228840063] [2022-12-14 04:57:25,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228840063] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:57:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761084330] [2022-12-14 04:57:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:25,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:57:25,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:57:25,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:57:25,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:57:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:25,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 3329 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 04:57:25,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:57:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-12-14 04:57:26,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:57:26,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761084330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:26,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:57:26,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-12-14 04:57:26,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232130063] [2022-12-14 04:57:26,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:57:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:26,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:57:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:57:26,060 INFO L87 Difference]: Start difference. First operand 18574 states and 24381 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:57:31,737 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 [] [2022-12-14 04:57:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:57:31,760 INFO L93 Difference]: Finished difference Result 40398 states and 53212 transitions. [2022-12-14 04:57:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:57:31,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 233 [2022-12-14 04:57:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:57:31,800 INFO L225 Difference]: With dead ends: 40398 [2022-12-14 04:57:31,800 INFO L226 Difference]: Without dead ends: 21959 [2022-12-14 04:57:31,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:57:31,826 INFO L413 NwaCegarLoop]: 1792 mSDtfsCounter, 1812 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:57:31,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 3886 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1367 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-12-14 04:57:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21959 states. [2022-12-14 04:57:32,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21959 to 21028. [2022-12-14 04:57:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21028 states, 12914 states have (on average 1.2971968406380672) internal successors, (16752), 13334 states have internal predecessors, (16752), 5405 states have call successors, (5405), 2742 states have call predecessors, (5405), 2708 states have return successors, (5461), 5225 states have call predecessors, (5461), 5379 states have call successors, (5461) [2022-12-14 04:57:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21028 states to 21028 states and 27618 transitions. [2022-12-14 04:57:32,588 INFO L78 Accepts]: Start accepts. Automaton has 21028 states and 27618 transitions. Word has length 233 [2022-12-14 04:57:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:57:32,588 INFO L495 AbstractCegarLoop]: Abstraction has 21028 states and 27618 transitions. [2022-12-14 04:57:32,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:57:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21028 states and 27618 transitions. [2022-12-14 04:57:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-12-14 04:57:32,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:57:32,592 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 3, 3, 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] [2022-12-14 04:57:32,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:57:32,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 04:57:32,792 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:57:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:57:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1839038274, now seen corresponding path program 1 times [2022-12-14 04:57:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:57:32,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453551627] [2022-12-14 04:57:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:57:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 04:57:33,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:57:33,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453551627] [2022-12-14 04:57:33,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453551627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:33,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:57:33,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 04:57:33,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967330984] [2022-12-14 04:57:33,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:33,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:57:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:57:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:57:33,692 INFO L87 Difference]: Start difference. First operand 21028 states and 27618 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 04:57:37,112 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 [] [2022-12-14 04:57:38,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:41,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:45,134 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 [] [2022-12-14 04:57:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:57:45,159 INFO L93 Difference]: Finished difference Result 42341 states and 55739 transitions. [2022-12-14 04:57:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:57:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) Word has length 244 [2022-12-14 04:57:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:57:45,203 INFO L225 Difference]: With dead ends: 42341 [2022-12-14 04:57:45,203 INFO L226 Difference]: Without dead ends: 21448 [2022-12-14 04:57:45,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:57:45,237 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 3 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6499 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:57:45,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6499 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 728 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2022-12-14 04:57:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21448 states. [2022-12-14 04:57:45,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21448 to 21304. [2022-12-14 04:57:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21304 states, 13102 states have (on average 1.292932376736376) internal successors, (16940), 13522 states have internal predecessors, (16940), 5405 states have call successors, (5405), 2742 states have call predecessors, (5405), 2796 states have return successors, (5633), 5313 states have call predecessors, (5633), 5379 states have call successors, (5633) [2022-12-14 04:57:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21304 states to 21304 states and 27978 transitions. [2022-12-14 04:57:46,017 INFO L78 Accepts]: Start accepts. Automaton has 21304 states and 27978 transitions. Word has length 244 [2022-12-14 04:57:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:57:46,017 INFO L495 AbstractCegarLoop]: Abstraction has 21304 states and 27978 transitions. [2022-12-14 04:57:46,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 04:57:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 21304 states and 27978 transitions. [2022-12-14 04:57:46,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-14 04:57:46,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:57:46,021 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 3, 3, 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] [2022-12-14 04:57:46,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 04:57:46,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:57:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:57:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash 189272552, now seen corresponding path program 1 times [2022-12-14 04:57:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:57:46,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365411463] [2022-12-14 04:57:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:57:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2022-12-14 04:57:46,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:57:46,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365411463] [2022-12-14 04:57:46,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365411463] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:57:46,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996073854] [2022-12-14 04:57:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:46,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:57:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:57:46,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:57:46,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:57:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:47,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 3387 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 04:57:47,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:57:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-12-14 04:57:47,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:57:47,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996073854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:47,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:57:47,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 04:57:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124462655] [2022-12-14 04:57:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:57:47,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:57:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:57:47,313 INFO L87 Difference]: Start difference. First operand 21304 states and 27978 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 04:57:50,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:54,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:57:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:57:54,234 INFO L93 Difference]: Finished difference Result 42575 states and 55906 transitions. [2022-12-14 04:57:54,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:57:54,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 248 [2022-12-14 04:57:54,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:57:54,278 INFO L225 Difference]: With dead ends: 42575 [2022-12-14 04:57:54,279 INFO L226 Difference]: Without dead ends: 21398 [2022-12-14 04:57:54,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:57:54,309 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1023 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:57:54,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 3018 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 04:57:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21398 states. [2022-12-14 04:57:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21398 to 20991. [2022-12-14 04:57:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20991 states, 12924 states have (on average 1.293098112039616) internal successors, (16712), 13353 states have internal predecessors, (16712), 5324 states have call successors, (5324), 2661 states have call predecessors, (5324), 2742 states have return successors, (5552), 5250 states have call predecessors, (5552), 5298 states have call successors, (5552) [2022-12-14 04:57:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20991 states to 20991 states and 27588 transitions. [2022-12-14 04:57:55,131 INFO L78 Accepts]: Start accepts. Automaton has 20991 states and 27588 transitions. Word has length 248 [2022-12-14 04:57:55,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:57:55,131 INFO L495 AbstractCegarLoop]: Abstraction has 20991 states and 27588 transitions. [2022-12-14 04:57:55,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 04:57:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 20991 states and 27588 transitions. [2022-12-14 04:57:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-12-14 04:57:55,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:57:55,138 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 3, 3, 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] [2022-12-14 04:57:55,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:57:55,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 04:57:55,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:57:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:57:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1659215434, now seen corresponding path program 1 times [2022-12-14 04:57:55,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:57:55,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85037178] [2022-12-14 04:57:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:57:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:57:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:57:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2022-12-14 04:57:55,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:57:55,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85037178] [2022-12-14 04:57:55,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85037178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:55,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:57:55,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:57:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238751542] [2022-12-14 04:57:55,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:55,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:57:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:57:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:57:55,954 INFO L87 Difference]: Start difference. First operand 20991 states and 27588 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 04:57:57,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:58:01,703 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 [] [2022-12-14 04:58:01,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:01,728 INFO L93 Difference]: Finished difference Result 39549 states and 51493 transitions. [2022-12-14 04:58:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:58:01,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 246 [2022-12-14 04:58:01,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:01,768 INFO L225 Difference]: With dead ends: 39549 [2022-12-14 04:58:01,768 INFO L226 Difference]: Without dead ends: 18693 [2022-12-14 04:58:01,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:58:01,802 INFO L413 NwaCegarLoop]: 1951 mSDtfsCounter, 1418 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 401 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:01,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 3035 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 497 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-12-14 04:58:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18693 states. [2022-12-14 04:58:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18693 to 18498. [2022-12-14 04:58:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18498 states, 11347 states have (on average 1.2833348021503481) internal successors, (14562), 11704 states have internal predecessors, (14562), 4538 states have call successors, (4538), 2533 states have call predecessors, (4538), 2612 states have return successors, (4746), 4495 states have call predecessors, (4746), 4521 states have call successors, (4746) [2022-12-14 04:58:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18498 states to 18498 states and 23846 transitions. [2022-12-14 04:58:02,514 INFO L78 Accepts]: Start accepts. Automaton has 18498 states and 23846 transitions. Word has length 246 [2022-12-14 04:58:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:02,514 INFO L495 AbstractCegarLoop]: Abstraction has 18498 states and 23846 transitions. [2022-12-14 04:58:02,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 04:58:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 18498 states and 23846 transitions. [2022-12-14 04:58:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-14 04:58:02,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:02,519 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 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] [2022-12-14 04:58:02,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 04:58:02,519 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:02,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -217451643, now seen corresponding path program 1 times [2022-12-14 04:58:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:02,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514435015] [2022-12-14 04:58:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-12-14 04:58:03,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:03,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514435015] [2022-12-14 04:58:03,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514435015] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:03,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863148590] [2022-12-14 04:58:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:03,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:03,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:03,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:03,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:58:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:03,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 3350 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 04:58:03,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-12-14 04:58:03,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:58:03,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863148590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:03,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:58:03,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-12-14 04:58:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332808561] [2022-12-14 04:58:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:03,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:58:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:58:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:58:03,969 INFO L87 Difference]: Start difference. First operand 18498 states and 23846 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-12-14 04:58:06,728 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 [] [2022-12-14 04:58:11,143 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 [] [2022-12-14 04:58:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:11,263 INFO L93 Difference]: Finished difference Result 39504 states and 51792 transitions. [2022-12-14 04:58:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:58:11,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 248 [2022-12-14 04:58:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:11,304 INFO L225 Difference]: With dead ends: 39504 [2022-12-14 04:58:11,304 INFO L226 Difference]: Without dead ends: 21103 [2022-12-14 04:58:11,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:58:11,333 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1172 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 76 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:11,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 3117 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1065 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-12-14 04:58:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21103 states. [2022-12-14 04:58:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21103 to 18594. [2022-12-14 04:58:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18594 states, 11420 states have (on average 1.2835376532399299) internal successors, (14658), 11796 states have internal predecessors, (14658), 4581 states have call successors, (4581), 2507 states have call predecessors, (4581), 2592 states have return successors, (4789), 4533 states have call predecessors, (4789), 4564 states have call successors, (4789) [2022-12-14 04:58:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18594 states to 18594 states and 24028 transitions. [2022-12-14 04:58:12,114 INFO L78 Accepts]: Start accepts. Automaton has 18594 states and 24028 transitions. Word has length 248 [2022-12-14 04:58:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:12,115 INFO L495 AbstractCegarLoop]: Abstraction has 18594 states and 24028 transitions. [2022-12-14 04:58:12,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-12-14 04:58:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 18594 states and 24028 transitions. [2022-12-14 04:58:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-12-14 04:58:12,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:12,120 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 3, 3, 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] [2022-12-14 04:58:12,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 04:58:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:12,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash 108305676, now seen corresponding path program 1 times [2022-12-14 04:58:12,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:12,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560092326] [2022-12-14 04:58:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-12-14 04:58:12,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:12,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560092326] [2022-12-14 04:58:12,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560092326] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:12,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173902828] [2022-12-14 04:58:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:12,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:12,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:12,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:12,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:58:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:13,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 3579 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 04:58:13,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-12-14 04:58:14,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:58:14,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173902828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:14,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:58:14,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-12-14 04:58:14,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206552531] [2022-12-14 04:58:14,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:14,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 04:58:14,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:14,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 04:58:14,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-14 04:58:14,019 INFO L87 Difference]: Start difference. First operand 18594 states and 24028 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2022-12-14 04:58:16,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:58:18,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:58:24,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:58:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:24,411 INFO L93 Difference]: Finished difference Result 39697 states and 51440 transitions. [2022-12-14 04:58:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:58:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) Word has length 252 [2022-12-14 04:58:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:24,450 INFO L225 Difference]: With dead ends: 39697 [2022-12-14 04:58:24,450 INFO L226 Difference]: Without dead ends: 21238 [2022-12-14 04:58:24,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-12-14 04:58:24,475 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1912 mSDsluCounter, 5130 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 265 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 6930 SdHoareTripleChecker+Invalid, 4843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:24,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 6930 Invalid, 4843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 4577 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-12-14 04:58:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21238 states. [2022-12-14 04:58:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21238 to 18600. [2022-12-14 04:58:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18600 states, 11426 states have (on average 1.283388762471556) internal successors, (14664), 11796 states have internal predecessors, (14664), 4581 states have call successors, (4581), 2507 states have call predecessors, (4581), 2592 states have return successors, (4789), 4539 states have call predecessors, (4789), 4564 states have call successors, (4789) [2022-12-14 04:58:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18600 states to 18600 states and 24034 transitions. [2022-12-14 04:58:25,250 INFO L78 Accepts]: Start accepts. Automaton has 18600 states and 24034 transitions. Word has length 252 [2022-12-14 04:58:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:25,251 INFO L495 AbstractCegarLoop]: Abstraction has 18600 states and 24034 transitions. [2022-12-14 04:58:25,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2022-12-14 04:58:25,251 INFO L276 IsEmpty]: Start isEmpty. Operand 18600 states and 24034 transitions. [2022-12-14 04:58:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-12-14 04:58:25,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:25,261 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:58:25,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:58:25,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:25,463 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:25,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1339007262, now seen corresponding path program 1 times [2022-12-14 04:58:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:25,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131740099] [2022-12-14 04:58:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2022-12-14 04:58:26,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:26,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131740099] [2022-12-14 04:58:26,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131740099] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:26,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068693928] [2022-12-14 04:58:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:26,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:26,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:26,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:26,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:58:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:26,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 3727 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 04:58:26,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-12-14 04:58:26,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2022-12-14 04:58:27,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068693928] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:27,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:58:27,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 5] total 11 [2022-12-14 04:58:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358253965] [2022-12-14 04:58:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:27,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 04:58:27,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 04:58:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:58:27,085 INFO L87 Difference]: Start difference. First operand 18600 states and 24034 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-12-14 04:58:32,987 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 [] [2022-12-14 04:58:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:33,036 INFO L93 Difference]: Finished difference Result 48642 states and 64513 transitions. [2022-12-14 04:58:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:58:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 291 [2022-12-14 04:58:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:33,098 INFO L225 Difference]: With dead ends: 48642 [2022-12-14 04:58:33,098 INFO L226 Difference]: Without dead ends: 30177 [2022-12-14 04:58:33,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:58:33,133 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 1643 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:33,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 3818 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1745 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-12-14 04:58:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30177 states. [2022-12-14 04:58:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30177 to 24592. [2022-12-14 04:58:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24592 states, 15169 states have (on average 1.286571296723581) internal successors, (19516), 15665 states have internal predecessors, (19516), 5954 states have call successors, (5954), 3359 states have call predecessors, (5954), 3468 states have return successors, (6214), 5899 states have call predecessors, (6214), 5937 states have call successors, (6214) [2022-12-14 04:58:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24592 states to 24592 states and 31684 transitions. [2022-12-14 04:58:34,293 INFO L78 Accepts]: Start accepts. Automaton has 24592 states and 31684 transitions. Word has length 291 [2022-12-14 04:58:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:34,293 INFO L495 AbstractCegarLoop]: Abstraction has 24592 states and 31684 transitions. [2022-12-14 04:58:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-12-14 04:58:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 24592 states and 31684 transitions. [2022-12-14 04:58:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-12-14 04:58:34,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:34,313 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 3, 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] [2022-12-14 04:58:34,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:58:34,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:34,516 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:34,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1610036614, now seen corresponding path program 1 times [2022-12-14 04:58:34,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:34,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949287272] [2022-12-14 04:58:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2022-12-14 04:58:35,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:35,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949287272] [2022-12-14 04:58:35,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949287272] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:35,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935992674] [2022-12-14 04:58:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:35,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:35,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:35,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:35,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:58:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:35,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 3977 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 04:58:35,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-12-14 04:58:36,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2022-12-14 04:58:36,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935992674] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:36,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 04:58:36,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 8] total 20 [2022-12-14 04:58:36,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946855240] [2022-12-14 04:58:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:36,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 04:58:36,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 04:58:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-12-14 04:58:36,448 INFO L87 Difference]: Start difference. First operand 24592 states and 31684 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 4 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (41), 5 states have call predecessors, (41), 4 states have call successors, (41) [2022-12-14 04:58:38,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:58:40,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:58:48,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:58:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:48,156 INFO L93 Difference]: Finished difference Result 58155 states and 76537 transitions. [2022-12-14 04:58:48,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 04:58:48,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 4 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (41), 5 states have call predecessors, (41), 4 states have call successors, (41) Word has length 310 [2022-12-14 04:58:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:48,222 INFO L225 Difference]: With dead ends: 58155 [2022-12-14 04:58:48,222 INFO L226 Difference]: Without dead ends: 33698 [2022-12-14 04:58:48,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2022-12-14 04:58:48,257 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 2711 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 4209 mSolverCounterSat, 1281 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 5383 SdHoareTripleChecker+Invalid, 5491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 4209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:48,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2874 Valid, 5383 Invalid, 5491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 4209 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-12-14 04:58:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33698 states. [2022-12-14 04:58:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33698 to 28758. [2022-12-14 04:58:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28758 states, 17823 states have (on average 1.290916231835269) internal successors, (23008), 18395 states have internal predecessors, (23008), 6884 states have call successors, (6884), 3912 states have call predecessors, (6884), 4050 states have return successors, (7195), 6847 states have call predecessors, (7195), 6867 states have call successors, (7195) [2022-12-14 04:58:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28758 states to 28758 states and 37087 transitions. [2022-12-14 04:58:49,619 INFO L78 Accepts]: Start accepts. Automaton has 28758 states and 37087 transitions. Word has length 310 [2022-12-14 04:58:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:49,619 INFO L495 AbstractCegarLoop]: Abstraction has 28758 states and 37087 transitions. [2022-12-14 04:58:49,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 4 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (41), 5 states have call predecessors, (41), 4 states have call successors, (41) [2022-12-14 04:58:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 28758 states and 37087 transitions. [2022-12-14 04:58:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-12-14 04:58:49,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:49,648 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 5, 5, 4, 3, 3, 3, 3, 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] [2022-12-14 04:58:49,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 04:58:49,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:49,850 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:49,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1727294239, now seen corresponding path program 1 times [2022-12-14 04:58:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:49,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29466246] [2022-12-14 04:58:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 32 proven. 10 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2022-12-14 04:58:50,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:50,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29466246] [2022-12-14 04:58:50,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29466246] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:50,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113124287] [2022-12-14 04:58:50,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:50,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:50,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:50,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f1e19e-dee4-4300-a2ca-0e0cbe27b48d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:58:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:51,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3986 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 04:58:51,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-12-14 04:58:51,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2022-12-14 04:58:51,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113124287] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:58:51,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245226129] [2022-12-14 04:58:51,773 INFO L159 IcfgInterpreter]: Started Sifa with 175 locations of interest [2022-12-14 04:58:51,773 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:58:51,776 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:58:51,780 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:58:51,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:59:02,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 62 [2022-12-14 04:59:02,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-12-14 04:59:02,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:02,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 0 case distinctions, treesize of input 1037 treesize of output 850 [2022-12-14 04:59:03,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:59:03,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:03,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 55 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 89 [2022-12-14 04:59:04,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 04:59:06,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:06,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:59:08,746 INFO L217 Elim1Store]: Index analysis took 4469 ms [2022-12-14 05:01:56,843 WARN L233 SmtUtils]: Spent 2.80m on a formula simplification. DAG size of input: 4366 DAG size of output: 1705 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:01:56,850 INFO L321 Elim1Store]: treesize reduction 25468, result has 13.4 percent of original size [2022-12-14 05:01:56,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 125 select indices, 125 select index equivalence classes, 7768 disjoint index pairs (out of 7750 index pairs), introduced 125 new quantified variables, introduced 132 case distinctions, treesize of input 656 treesize of output 4330 [2022-12-14 05:02:00,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 05:02:00,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 05:02:01,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 05:02:06,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:09,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:15,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:17,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:17,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:17,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:17,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:17,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:02:24,517 INFO L217 Elim1Store]: Index analysis took 21327 ms [2022-12-14 05:07:30,834 WARN L233 SmtUtils]: Spent 5.10m on a formula simplification. DAG size of input: 6549 DAG size of output: 2756 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:07:30,841 INFO L321 Elim1Store]: treesize reduction 33504, result has 13.3 percent of original size [2022-12-14 05:07:30,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 135 select indices, 135 select index equivalence classes, 7893 disjoint index pairs (out of 9045 index pairs), introduced 135 new quantified variables, introduced 1292 case distinctions, treesize of input 850 treesize of output 5689 [2022-12-14 05:07:41,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 05:08:23,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:08:23,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:08:23,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:08:38,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 276 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 1453 treesize of output 1081 [2022-12-14 05:08:38,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:38,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 210 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 64 [2022-12-14 05:08:39,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-12-14 05:08:39,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:39,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-14 05:08:39,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 37 [2022-12-14 05:08:39,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:08:40,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:40,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 135 select indices, 135 select index equivalence classes, 9045 disjoint index pairs (out of 9045 index pairs), introduced 135 new quantified variables, introduced 0 case distinctions, treesize of input 676 treesize of output 406 [2022-12-14 05:08:42,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:08:42,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 134 select indices, 134 select index equivalence classes, 8920 disjoint index pairs (out of 8911 index pairs), introduced 134 new quantified variables, introduced 0 case distinctions, treesize of input 671 treesize of output 403 [2022-12-14 05:09:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 276 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 1453 treesize of output 1081 [2022-12-14 05:09:34,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 05:09:34,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:34,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-12-14 05:09:34,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 37 [2022-12-14 05:09:35,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 210 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 64 [2022-12-14 05:09:35,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:35,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-12-14 05:09:36,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:36,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:09:37,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 135 select indices, 135 select index equivalence classes, 9045 disjoint index pairs (out of 9045 index pairs), introduced 135 new quantified variables, introduced 0 case distinctions, treesize of input 676 treesize of output 406