./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur --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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- 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-38b53e6 [2022-11-25 23:26:17,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:26:17,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:26:17,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:26:17,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:26:17,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:26:17,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:26:17,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:26:17,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:26:17,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:26:17,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:26:17,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:26:17,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:26:17,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:26:17,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:26:17,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:26:17,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:26:17,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:26:17,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:26:17,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:26:17,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:26:17,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:26:17,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:26:17,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:26:17,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:26:17,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:26:17,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:26:17,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:26:17,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:26:17,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:26:17,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:26:17,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:26:17,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:26:17,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:26:17,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:26:17,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:26:17,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:26:17,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:26:17,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:26:17,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:26:17,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:26:17,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:26:17,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:26:17,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:26:17,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:26:17,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:26:17,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:26:17,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:26:17,804 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:26:17,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:26:17,805 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:26:17,805 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:26:17,806 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:26:17,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:26:17,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:26:17,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:26:17,807 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:26:17,808 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:26:17,808 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:26:17,808 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:26:17,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:26:17,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:26:17,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:26:17,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:26:17,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:26:17,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:26:17,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:26:17,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:26:17,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:26:17,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:26:17,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:26:17,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:26:17,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:26:17,812 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:26:17,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:26:17,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:26:17,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:26:17,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:26:17,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:26:17,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:26:17,813 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_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2022-11-25 23:26:18,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:26:18,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:26:18,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:26:18,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:26:18,140 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:26:18,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-11-25 23:26:21,172 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:26:21,701 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:26:21,702 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-11-25 23:26:21,731 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/data/554c44fa4/7c5b18ab630e453c9ac494b0552d83d0/FLAG346d85e07 [2022-11-25 23:26:21,749 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/data/554c44fa4/7c5b18ab630e453c9ac494b0552d83d0 [2022-11-25 23:26:21,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:26:21,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:26:21,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:26:21,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:26:21,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:26:21,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:26:21" (1/1) ... [2022-11-25 23:26:21,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf70393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:21, skipping insertion in model container [2022-11-25 23:26:21,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:26:21" (1/1) ... [2022-11-25 23:26:21,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:26:21,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:26:22,557 WARN L623 FunctionHandler]: Unknown extern function __kmalloc [2022-11-25 23:26:22,650 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 23:26:22,652 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 23:26:22,662 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:26:22,666 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:26:22,702 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:26:22,708 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-25 23:26:22,722 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 23:26:22,732 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 23:26:22,734 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 23:26:22,798 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 23:26:22,865 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:22,868 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:22,869 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:22,871 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:22,876 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-11-25 23:26:22,885 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 23:26:22,898 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-11-25 23:26:22,901 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-11-25 23:26:22,925 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 23:26:22,932 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:22,944 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:22,951 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:22,952 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:22,953 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:22,963 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:22,966 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-11-25 23:26:22,977 WARN L623 FunctionHandler]: Unknown extern function usb_bulk_msg [2022-11-25 23:26:23,014 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,022 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,025 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-11-25 23:26:23,026 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,026 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,027 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-11-25 23:26:23,028 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,028 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,033 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,034 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,034 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,036 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,038 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,045 WARN L623 FunctionHandler]: Unknown extern function usb_unlink_urb [2022-11-25 23:26:23,045 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-11-25 23:26:23,046 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-11-25 23:26:23,055 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-11-25 23:26:23,055 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,056 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,056 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-25 23:26:23,064 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,065 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,069 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-11-25 23:26:23,070 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,072 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-11-25 23:26:23,072 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-11-25 23:26:23,076 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,076 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-11-25 23:26:23,077 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-11-25 23:26:23,077 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:26:23,078 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,079 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,081 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:26:23,086 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,087 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-25 23:26:23,100 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,111 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:23,125 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-11-25 23:26:23,126 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,129 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,138 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,140 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,143 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,143 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-11-25 23:26:23,144 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,144 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:26:23,145 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:26:23,145 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-25 23:26:23,151 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 23:26:23,151 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-25 23:26:23,152 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:26:23,159 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:26:23,160 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:26:23,164 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 23:26:23,184 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 23:26:23,189 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:26:23,190 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:26:23,191 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:26:23,196 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_57194e7a-8555-402c-b81d-8807ef724f93/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2022-11-25 23:26:23,209 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-25 23:26:23,213 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-25 23:26:23,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:26:23,283 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:26:23,388 WARN L623 FunctionHandler]: Unknown extern function __kmalloc [2022-11-25 23:26:23,392 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 23:26:23,393 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 23:26:23,394 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:26:23,394 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:26:23,397 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:26:23,399 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-25 23:26:23,404 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 23:26:23,406 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 23:26:23,407 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 23:26:23,420 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 23:26:23,431 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:23,433 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,435 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,435 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,439 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-11-25 23:26:23,441 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 23:26:23,442 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-11-25 23:26:23,443 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-11-25 23:26:23,448 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 23:26:23,449 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:23,453 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,464 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,465 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,465 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,488 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:23,491 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-11-25 23:26:23,493 WARN L623 FunctionHandler]: Unknown extern function usb_bulk_msg [2022-11-25 23:26:23,496 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,498 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,501 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-11-25 23:26:23,501 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,501 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,502 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-11-25 23:26:23,503 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,505 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,507 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,508 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,508 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,511 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,511 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,513 WARN L623 FunctionHandler]: Unknown extern function usb_unlink_urb [2022-11-25 23:26:23,513 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-11-25 23:26:23,513 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-11-25 23:26:23,515 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-11-25 23:26:23,515 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,516 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,517 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-25 23:26:23,519 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,522 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,528 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-11-25 23:26:23,532 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,540 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-11-25 23:26:23,541 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-11-25 23:26:23,542 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:26:23,545 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-11-25 23:26:23,546 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-11-25 23:26:23,547 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:26:23,547 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-25 23:26:23,548 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,587 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 23:26:23,588 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,589 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-11-25 23:26:23,593 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-11-25 23:26:23,597 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-11-25 23:26:23,601 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-11-25 23:26:23,601 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,606 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,606 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,608 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,609 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,611 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-11-25 23:26:23,611 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:26:23,612 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:26:23,613 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:26:23,613 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-25 23:26:23,614 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 23:26:23,614 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-11-25 23:26:23,614 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:26:23,616 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:26:23,618 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:26:23,618 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 23:26:23,619 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 23:26:23,626 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:26:23,626 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:26:23,628 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-25 23:26:23,629 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_57194e7a-8555-402c-b81d-8807ef724f93/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2022-11-25 23:26:23,630 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-25 23:26:23,632 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-25 23:26:23,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:26:23,850 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:26:23,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23 WrapperNode [2022-11-25 23:26:23,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:26:23,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:26:23,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:26:23,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:26:23,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:23,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:23,971 INFO L138 Inliner]: procedures = 133, calls = 749, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1391 [2022-11-25 23:26:23,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:26:23,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:26:23,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:26:23,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:26:23,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:23,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:23,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:23,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:24,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:24,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:24,074 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:24,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:24,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:26:24,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:26:24,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:26:24,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:26:24,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (1/1) ... [2022-11-25 23:26:24,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:26:24,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:26:24,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:26:24,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:26:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-25 23:26:24,179 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-25 23:26:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2022-11-25 23:26:24,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2022-11-25 23:26:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:26:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-25 23:26:24,179 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-25 23:26:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-11-25 23:26:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-25 23:26:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 23:26:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 23:26:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2022-11-25 23:26:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2022-11-25 23:26:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-11-25 23:26:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-11-25 23:26:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 23:26:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 23:26:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-11-25 23:26:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-11-25 23:26:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:26:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-25 23:26:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-25 23:26:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-25 23:26:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-25 23:26:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-25 23:26:24,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-25 23:26:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-25 23:26:24,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-25 23:26:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-11-25 23:26:24,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-11-25 23:26:24,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:26:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-11-25 23:26:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-11-25 23:26:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:26:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-25 23:26:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-25 23:26:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:26:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:26:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-11-25 23:26:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-11-25 23:26:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-25 23:26:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-25 23:26:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-25 23:26:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-25 23:26:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:26:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-25 23:26:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-25 23:26:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-25 23:26:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-25 23:26:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-11-25 23:26:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-11-25 23:26:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-25 23:26:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-25 23:26:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:26:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:26:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-25 23:26:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-25 23:26:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-25 23:26:24,188 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-25 23:26:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-25 23:26:24,188 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-25 23:26:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-11-25 23:26:24,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-11-25 23:26:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-25 23:26:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-25 23:26:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-25 23:26:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-25 23:26:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-25 23:26:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-25 23:26:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-25 23:26:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-25 23:26:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:26:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-25 23:26:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-25 23:26:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-25 23:26:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-25 23:26:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 23:26:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:26:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:26:24,622 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:26:24,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:26:24,940 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-25 23:26:25,165 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 23:26:27,618 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-11-25 23:26:27,618 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-11-25 23:26:27,669 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:26:27,945 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:26:27,946 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-25 23:26:27,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:26:27 BoogieIcfgContainer [2022-11-25 23:26:27,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:26:27,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:26:27,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:26:27,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:26:27,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:26:21" (1/3) ... [2022-11-25 23:26:27,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322aed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:26:27, skipping insertion in model container [2022-11-25 23:26:27,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:26:23" (2/3) ... [2022-11-25 23:26:27,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322aed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:26:27, skipping insertion in model container [2022-11-25 23:26:27,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:26:27" (3/3) ... [2022-11-25 23:26:27,958 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-11-25 23:26:27,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:26:27,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:26:28,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:26:28,044 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;@1c3438af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:26:28,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:26:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 200 states have (on average 1.38) internal successors, (276), 212 states have internal predecessors, (276), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-25 23:26:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:26:28,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:28,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:26:28,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:26:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1750355893, now seen corresponding path program 1 times [2022-11-25 23:26:28,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:28,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109715786] [2022-11-25 23:26:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:28,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:28,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109715786] [2022-11-25 23:26:28,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109715786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:28,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:28,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:26:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075547469] [2022-11-25 23:26:28,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:26:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:26:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:28,649 INFO L87 Difference]: Start difference. First operand has 327 states, 200 states have (on average 1.38) internal successors, (276), 212 states have internal predecessors, (276), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:33,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:33,215 INFO L93 Difference]: Finished difference Result 836 states and 1187 transitions. [2022-11-25 23:26:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:26:33,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-25 23:26:33,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:33,240 INFO L225 Difference]: With dead ends: 836 [2022-11-25 23:26:33,248 INFO L226 Difference]: Without dead ends: 508 [2022-11-25 23:26:33,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:33,258 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 252 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:33,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 810 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 23:26:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-25 23:26:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2022-11-25 23:26:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 311 states have (on average 1.3183279742765273) internal successors, (410), 322 states have internal predecessors, (410), 136 states have call successors, (136), 58 states have call predecessors, (136), 56 states have return successors, (132), 126 states have call predecessors, (132), 132 states have call successors, (132) [2022-11-25 23:26:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 678 transitions. [2022-11-25 23:26:33,396 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 678 transitions. Word has length 10 [2022-11-25 23:26:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:33,397 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 678 transitions. [2022-11-25 23:26:33,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 678 transitions. [2022-11-25 23:26:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:26:33,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:33,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:26:33,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:26:33,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:26:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1573313863, now seen corresponding path program 1 times [2022-11-25 23:26:33,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:33,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372086474] [2022-11-25 23:26:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:33,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:33,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372086474] [2022-11-25 23:26:33,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372086474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:33,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:33,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:26:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140897040] [2022-11-25 23:26:33,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:33,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:26:33,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:26:33,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:33,567 INFO L87 Difference]: Start difference. First operand 504 states and 678 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:36,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:38,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:38,069 INFO L93 Difference]: Finished difference Result 742 states and 994 transitions. [2022-11-25 23:26:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:26:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 23:26:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:38,075 INFO L225 Difference]: With dead ends: 742 [2022-11-25 23:26:38,076 INFO L226 Difference]: Without dead ends: 733 [2022-11-25 23:26:38,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:38,078 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 311 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:38,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 819 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 23:26:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-25 23:26:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 728. [2022-11-25 23:26:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 451 states have (on average 1.3082039911308203) internal successors, (590), 463 states have internal predecessors, (590), 195 states have call successors, (195), 84 states have call predecessors, (195), 81 states have return successors, (191), 182 states have call predecessors, (191), 191 states have call successors, (191) [2022-11-25 23:26:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 976 transitions. [2022-11-25 23:26:38,146 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 976 transitions. Word has length 11 [2022-11-25 23:26:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:38,147 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 976 transitions. [2022-11-25 23:26:38,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:26:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 976 transitions. [2022-11-25 23:26:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:26:38,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:38,151 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:26:38,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:26:38,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:26:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1402781733, now seen corresponding path program 1 times [2022-11-25 23:26:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:38,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814800873] [2022-11-25 23:26:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:38,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:26:38,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814800873] [2022-11-25 23:26:38,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814800873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:38,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:38,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:26:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166517953] [2022-11-25 23:26:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:38,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:26:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:26:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:38,507 INFO L87 Difference]: Start difference. First operand 728 states and 976 transitions. 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:26:41,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:41,233 INFO L93 Difference]: Finished difference Result 1772 states and 2471 transitions. [2022-11-25 23:26:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:26:41,234 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-11-25 23:26:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:41,240 INFO L225 Difference]: With dead ends: 1772 [2022-11-25 23:26:41,241 INFO L226 Difference]: Without dead ends: 1049 [2022-11-25 23:26:41,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:26:41,246 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 164 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:41,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 757 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 23:26:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2022-11-25 23:26:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1040. [2022-11-25 23:26:41,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 661 states have (on average 1.3449319213313162) internal successors, (889), 681 states have internal predecessors, (889), 297 states have call successors, (297), 84 states have call predecessors, (297), 81 states have return successors, (293), 278 states have call predecessors, (293), 293 states have call successors, (293) [2022-11-25 23:26:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1479 transitions. [2022-11-25 23:26:41,320 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1479 transitions. Word has length 52 [2022-11-25 23:26:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:41,320 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 1479 transitions. [2022-11-25 23:26:41,321 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:26:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1479 transitions. [2022-11-25 23:26:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 23:26:41,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:41,325 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:26:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:26:41,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:26:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1235726526, now seen corresponding path program 1 times [2022-11-25 23:26:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:41,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636300916] [2022-11-25 23:26:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:41,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:26:42,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:42,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636300916] [2022-11-25 23:26:42,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636300916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:42,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:42,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:26:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473581058] [2022-11-25 23:26:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:26:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:26:42,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:26:42,687 INFO L87 Difference]: Start difference. First operand 1040 states and 1479 transitions. Second operand has 11 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 23:26:45,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:50,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:26:59,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:00,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:02,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:05,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:06,474 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 [] [2022-11-25 23:27:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:27:09,683 INFO L93 Difference]: Finished difference Result 2364 states and 3436 transitions. [2022-11-25 23:27:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:27:09,684 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2022-11-25 23:27:09,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:27:09,693 INFO L225 Difference]: With dead ends: 2364 [2022-11-25 23:27:09,693 INFO L226 Difference]: Without dead ends: 1580 [2022-11-25 23:27:09,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:27:09,701 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 442 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 82 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:27:09,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 3136 Invalid, 2483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2399 Invalid, 2 Unknown, 0 Unchecked, 26.6s Time] [2022-11-25 23:27:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-11-25 23:27:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1050. [2022-11-25 23:27:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 668 states have (on average 1.344311377245509) internal successors, (898), 686 states have internal predecessors, (898), 299 states have call successors, (299), 85 states have call predecessors, (299), 82 states have return successors, (295), 282 states have call predecessors, (295), 295 states have call successors, (295) [2022-11-25 23:27:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1492 transitions. [2022-11-25 23:27:09,795 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1492 transitions. Word has length 47 [2022-11-25 23:27:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:27:09,796 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 1492 transitions. [2022-11-25 23:27:09,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 23:27:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1492 transitions. [2022-11-25 23:27:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:27:09,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:27:09,804 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:27:09,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:27:09,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:27:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:27:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1390502159, now seen corresponding path program 1 times [2022-11-25 23:27:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:27:09,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213822472] [2022-11-25 23:27:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:27:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:27:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:27:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:27:10,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:10,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213822472] [2022-11-25 23:27:10,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213822472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:27:10,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:27:10,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:27:10,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423814441] [2022-11-25 23:27:10,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:27:10,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:27:10,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:27:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:27:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:27:10,539 INFO L87 Difference]: Start difference. First operand 1050 states and 1492 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 23:27:21,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:22,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:30,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:32,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:35,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:36,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:27:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:27:38,386 INFO L93 Difference]: Finished difference Result 2328 states and 3431 transitions. [2022-11-25 23:27:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:27:38,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 53 [2022-11-25 23:27:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:27:38,400 INFO L225 Difference]: With dead ends: 2328 [2022-11-25 23:27:38,400 INFO L226 Difference]: Without dead ends: 2323 [2022-11-25 23:27:38,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:27:38,402 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1114 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:27:38,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 2325 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 27.6s Time] [2022-11-25 23:27:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2022-11-25 23:27:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1769. [2022-11-25 23:27:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1123 states have (on average 1.3437221727515583) internal successors, (1509), 1155 states have internal predecessors, (1509), 507 states have call successors, (507), 142 states have call predecessors, (507), 138 states have return successors, (523), 479 states have call predecessors, (523), 503 states have call successors, (523) [2022-11-25 23:27:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2539 transitions. [2022-11-25 23:27:38,566 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2539 transitions. Word has length 53 [2022-11-25 23:27:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:27:38,569 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 2539 transitions. [2022-11-25 23:27:38,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 23:27:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2539 transitions. [2022-11-25 23:27:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 23:27:38,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:27:38,574 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:27:38,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:27:38,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:27:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:27:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1172846488, now seen corresponding path program 1 times [2022-11-25 23:27:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:27:38,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857930132] [2022-11-25 23:27:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:27:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:27:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:27:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:27:38,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:38,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857930132] [2022-11-25 23:27:38,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857930132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:27:38,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:27:38,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:27:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797317493] [2022-11-25 23:27:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:27:38,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:27:38,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:27:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:27:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:27:38,864 INFO L87 Difference]: Start difference. First operand 1769 states and 2539 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:27:43,334 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 [] [2022-11-25 23:27:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:27:44,001 INFO L93 Difference]: Finished difference Result 3025 states and 4359 transitions. [2022-11-25 23:27:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:27:44,002 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2022-11-25 23:27:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:27:44,012 INFO L225 Difference]: With dead ends: 3025 [2022-11-25 23:27:44,012 INFO L226 Difference]: Without dead ends: 1779 [2022-11-25 23:27:44,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:27:44,017 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:27:44,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 745 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 23:27:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-11-25 23:27:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1779. [2022-11-25 23:27:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1133 states have (on average 1.3406884377758164) internal successors, (1519), 1165 states have internal predecessors, (1519), 507 states have call successors, (507), 142 states have call predecessors, (507), 138 states have return successors, (523), 479 states have call predecessors, (523), 503 states have call successors, (523) [2022-11-25 23:27:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2549 transitions. [2022-11-25 23:27:44,157 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2549 transitions. Word has length 65 [2022-11-25 23:27:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:27:44,157 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2549 transitions. [2022-11-25 23:27:44,158 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:27:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2549 transitions. [2022-11-25 23:27:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:27:44,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:27:44,161 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:27:44,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:27:44,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:27:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:27:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash -178206725, now seen corresponding path program 1 times [2022-11-25 23:27:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:27:44,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985129895] [2022-11-25 23:27:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:27:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:27:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:27:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:27:44,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:44,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985129895] [2022-11-25 23:27:44,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985129895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:27:44,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18461638] [2022-11-25 23:27:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:27:44,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:27:44,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:27:44,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:27:44,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57194e7a-8555-402c-b81d-8807ef724f93/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:27:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:27:44,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:27:44,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:27:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:27:45,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:27:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:27:45,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18461638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:27:45,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376749680] [2022-11-25 23:27:45,129 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-25 23:27:45,130 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:27:45,133 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:27:45,139 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:27:45,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:27:46,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 196 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 76 [2022-11-25 23:27:46,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2866 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 351 [2022-11-25 23:27:47,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1308 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 231 [2022-11-25 23:28:06,737 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 [2022-11-25 23:28:06,743 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 [2022-11-25 23:29:16,444 INFO L217 Elim1Store]: Index analysis took 104 ms [2022-11-25 23:29:17,721 INFO L321 Elim1Store]: treesize reduction 97, result has 21.1 percent of original size [2022-11-25 23:29:17,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 48 [2022-11-25 23:29:18,103 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-25 23:29:18,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 64 [2022-11-25 23:29:18,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:29:18,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:29:18,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:29:18,263 INFO L321 Elim1Store]: treesize reduction 169, result has 21.4 percent of original size [2022-11-25 23:29:18,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 16 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 111 [2022-11-25 23:29:18,689 INFO L321 Elim1Store]: treesize reduction 344, result has 39.5 percent of original size [2022-11-25 23:29:18,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 116 treesize of output 289 [2022-11-25 23:29:19,599 INFO L321 Elim1Store]: treesize reduction 208, result has 42.4 percent of original size [2022-11-25 23:29:19,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 109 treesize of output 153 [2022-11-25 23:29:20,026 INFO L321 Elim1Store]: treesize reduction 232, result has 53.3 percent of original size [2022-11-25 23:29:20,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 16 case distinctions, treesize of input 187 treesize of output 387 [2022-11-25 23:29:20,560 INFO L217 Elim1Store]: Index analysis took 170 ms [2022-11-25 23:29:22,195 INFO L321 Elim1Store]: treesize reduction 88, result has 28.5 percent of original size [2022-11-25 23:29:22,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 57 [2022-11-25 23:29:22,761 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-25 23:29:22,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 73 [2022-11-25 23:29:22,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:29:22,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:29:22,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:29:23,083 INFO L321 Elim1Store]: treesize reduction 169, result has 21.4 percent of original size [2022-11-25 23:29:23,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 111 [2022-11-25 23:29:23,543 INFO L321 Elim1Store]: treesize reduction 348, result has 38.8 percent of original size [2022-11-25 23:29:23,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 116 treesize of output 285 [2022-11-25 23:29:24,045 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-25 23:29:24,101 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 13