./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.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_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/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_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/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_b20ba565-8805-4112-978f-2946d67fce7c/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 cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db --- 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 23:53:17,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:53:17,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:53:17,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:53:17,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:53:17,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:53:17,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:53:17,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:53:17,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:53:17,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:53:17,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:53:17,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:53:17,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:53:17,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:53:17,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:53:17,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:53:17,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:53:17,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:53:17,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:53:17,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:53:17,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:53:17,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:53:17,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:53:17,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:53:17,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:53:17,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:53:17,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:53:17,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:53:17,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:53:17,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:53:17,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:53:17,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:53:17,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:53:17,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:53:17,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:53:17,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:53:17,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:53:17,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:53:17,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:53:17,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:53:17,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:53:17,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:53:17,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:53:17,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:53:17,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:53:17,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:53:17,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:53:17,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:53:17,250 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:53:17,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:53:17,250 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:53:17,250 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:53:17,251 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:53:17,251 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:53:17,251 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:53:17,252 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:53:17,252 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:53:17,252 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:53:17,252 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:53:17,253 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:53:17,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:53:17,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:53:17,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:53:17,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:53:17,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:53:17,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:53:17,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:53:17,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:53:17,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:53:17,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:53:17,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:53:17,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:53:17,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:53:17,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:53:17,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:53:17,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:53:17,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:53:17,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:53:17,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:53:17,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:53:17,258 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_b20ba565-8805-4112-978f-2946d67fce7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2022-11-25 23:53:17,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:53:17,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:53:17,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:53:17,558 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:53:17,559 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:53:17,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-25 23:53:20,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:53:21,467 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:53:21,467 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-25 23:53:21,516 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/data/f5c696c1d/aa674bea116d4b84a280b2a7f0065432/FLAG2691ede7f [2022-11-25 23:53:21,540 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/data/f5c696c1d/aa674bea116d4b84a280b2a7f0065432 [2022-11-25 23:53:21,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:53:21,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:53:21,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:53:21,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:53:21,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:53:21,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:53:21" (1/1) ... [2022-11-25 23:53:21,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ebbe14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:21, skipping insertion in model container [2022-11-25 23:53:21,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:53:21" (1/1) ... [2022-11-25 23:53:21,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:53:21,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:53:22,866 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 23:53:22,902 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-25 23:53:23,247 WARN L623 FunctionHandler]: Unknown extern function virtio_check_driver_offered_feature [2022-11-25 23:53:23,439 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:23,444 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:23,452 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:23,453 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:23,454 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:23,454 WARN L623 FunctionHandler]: Unknown extern function virtqueue_add_sgs [2022-11-25 23:53:23,470 WARN L623 FunctionHandler]: Unknown extern function blk_mq_end_request [2022-11-25 23:53:23,478 WARN L623 FunctionHandler]: Unknown extern function virtqueue_disable_cb [2022-11-25 23:53:23,479 WARN L623 FunctionHandler]: Unknown extern function blk_mq_complete_request [2022-11-25 23:53:23,480 WARN L623 FunctionHandler]: Unknown extern function virtqueue_get_buf [2022-11-25 23:53:23,481 WARN L623 FunctionHandler]: Unknown extern function virtqueue_is_broken [2022-11-25 23:53:23,482 WARN L623 FunctionHandler]: Unknown extern function virtqueue_enable_cb [2022-11-25 23:53:23,487 WARN L623 FunctionHandler]: Unknown extern function blk_mq_start_stopped_hw_queues [2022-11-25 23:53:23,499 WARN L623 FunctionHandler]: Unknown extern function blk_mq_start_request [2022-11-25 23:53:23,500 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_sg [2022-11-25 23:53:23,503 WARN L623 FunctionHandler]: Unknown extern function virtqueue_kick [2022-11-25 23:53:23,504 WARN L623 FunctionHandler]: Unknown extern function blk_mq_stop_hw_queue [2022-11-25 23:53:23,506 WARN L623 FunctionHandler]: Unknown extern function virtqueue_kick_prepare [2022-11-25 23:53:23,507 WARN L623 FunctionHandler]: Unknown extern function virtqueue_notify [2022-11-25 23:53:23,513 WARN L623 FunctionHandler]: Unknown extern function bio_map_kern [2022-11-25 23:53:23,519 WARN L623 FunctionHandler]: Unknown extern function bio_put [2022-11-25 23:53:23,521 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq [2022-11-25 23:53:23,529 WARN L623 FunctionHandler]: Unknown extern function scsi_cmd_blk_ioctl [2022-11-25 23:53:23,592 WARN L623 FunctionHandler]: Unknown extern function __compiletime_assert_322 [2022-11-25 23:53:23,619 WARN L623 FunctionHandler]: Unknown extern function string_get_size [2022-11-25 23:53:23,619 WARN L623 FunctionHandler]: Unknown extern function string_get_size [2022-11-25 23:53:23,622 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-11-25 23:53:23,623 WARN L623 FunctionHandler]: Unknown extern function revalidate_disk [2022-11-25 23:53:23,624 WARN L623 FunctionHandler]: Unknown extern function kobject_uevent_env [2022-11-25 23:53:23,670 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 23:53:23,671 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:23,673 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:23,673 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:23,673 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:23,709 WARN L623 FunctionHandler]: Unknown extern function blk_queue_flush [2022-11-25 23:53:23,710 WARN L623 FunctionHandler]: Unknown extern function blk_queue_flush [2022-11-25 23:53:23,711 WARN L623 FunctionHandler]: Unknown extern function revalidate_disk [2022-11-25 23:53:23,718 WARN L623 FunctionHandler]: Unknown extern function sysfs_streq [2022-11-25 23:53:23,742 WARN L623 FunctionHandler]: Unknown extern function sg_init_table [2022-11-25 23:53:23,750 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:53:23,751 WARN L623 FunctionHandler]: Unknown extern function ida_simple_get [2022-11-25 23:53:23,754 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 23:53:23,755 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 23:53:23,758 WARN L623 FunctionHandler]: Unknown extern function blk_mq_alloc_tag_set [2022-11-25 23:53:23,758 WARN L623 FunctionHandler]: Unknown extern function blk_mq_init_queue [2022-11-25 23:53:23,761 WARN L623 FunctionHandler]: Unknown extern function set_disk_ro [2022-11-25 23:53:23,763 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segments [2022-11-25 23:53:23,763 WARN L623 FunctionHandler]: Unknown extern function blk_queue_bounce_limit [2022-11-25 23:53:23,764 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_hw_sectors [2022-11-25 23:53:23,766 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segment_size [2022-11-25 23:53:23,766 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segment_size [2022-11-25 23:53:23,768 WARN L623 FunctionHandler]: Unknown extern function blk_queue_logical_block_size [2022-11-25 23:53:23,770 WARN L623 FunctionHandler]: Unknown extern function blk_queue_physical_block_size [2022-11-25 23:53:23,772 WARN L623 FunctionHandler]: Unknown extern function blk_queue_alignment_offset [2022-11-25 23:53:23,774 WARN L623 FunctionHandler]: Unknown extern function blk_queue_io_min [2022-11-25 23:53:23,776 WARN L623 FunctionHandler]: Unknown extern function blk_queue_io_opt [2022-11-25 23:53:23,777 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-11-25 23:53:23,778 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-11-25 23:53:23,778 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-11-25 23:53:23,779 WARN L623 FunctionHandler]: Unknown extern function blk_mq_free_tag_set [2022-11-25 23:53:23,780 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:23,780 WARN L623 FunctionHandler]: Unknown extern function ida_simple_remove [2022-11-25 23:53:23,787 WARN L623 FunctionHandler]: Unknown extern function flush_work [2022-11-25 23:53:23,787 WARN L623 FunctionHandler]: Unknown extern function blk_mq_free_tag_set [2022-11-25 23:53:23,789 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:23,789 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:23,790 WARN L623 FunctionHandler]: Unknown extern function ida_simple_remove [2022-11-25 23:53:23,795 WARN L623 FunctionHandler]: Unknown extern function flush_work [2022-11-25 23:53:23,796 WARN L623 FunctionHandler]: Unknown extern function blk_mq_stop_hw_queues [2022-11-25 23:53:23,802 WARN L623 FunctionHandler]: Unknown extern function blk_mq_start_stopped_hw_queues [2022-11-25 23:53:23,808 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-11-25 23:53:23,809 WARN L623 FunctionHandler]: Unknown extern function register_blkdev [2022-11-25 23:53:23,811 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-11-25 23:53:23,812 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-25 23:53:23,817 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-11-25 23:53:23,818 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-25 23:53:23,934 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-25 23:53:23,934 WARN L623 FunctionHandler]: Unknown extern function __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-25 23:53:23,935 WARN L623 FunctionHandler]: Unknown extern function __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-25 23:53:23,936 WARN L623 FunctionHandler]: Unknown extern function alloc_disk [2022-11-25 23:53:23,937 WARN L623 FunctionHandler]: Unknown extern function add_disk [2022-11-25 23:53:23,937 WARN L623 FunctionHandler]: Unknown extern function del_gendisk [2022-11-25 23:53:23,938 WARN L623 FunctionHandler]: Unknown extern function blk_cleanup_queue [2022-11-25 23:53:23,938 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:53:23,939 WARN L623 FunctionHandler]: Unknown extern function del_gendisk [2022-11-25 23:53:23,942 WARN L623 FunctionHandler]: Unknown extern function blk_cleanup_queue [2022-11-25 23:53:23,942 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:53:23,952 WARN L623 FunctionHandler]: Unknown extern function register_virtio_driver [2022-11-25 23:53:23,953 WARN L623 FunctionHandler]: Unknown extern function unregister_virtio_driver [2022-11-25 23:53:24,440 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-25 23:53:24,694 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-25 23:53:25,199 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-25 23:53:25,204 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-25 23:53:25,205 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-25 23:53:25,205 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-25 23:53:25,206 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-25 23:53:25,206 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-25 23:53:25,207 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-25 23:53:25,208 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-25 23:53:25,208 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-25 23:53:25,209 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-25 23:53:25,209 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-25 23:53:25,210 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-25 23:53:25,211 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-25 23:53:25,211 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-25 23:53:25,212 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-25 23:53:25,212 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-25 23:53:25,213 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-25 23:53:25,214 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-25 23:53:25,215 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-25 23:53:25,216 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-25 23:53:25,217 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-25 23:53:25,217 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-25 23:53:25,219 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-25 23:53:25,220 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-25 23:53:25,221 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-25 23:53:25,221 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-25 23:53:25,222 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-25 23:53:25,230 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-25 23:53:25,232 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-25 23:53:25,233 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-25 23:53:25,235 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-25 23:53:25,236 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-25 23:53:25,236 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-25 23:53:25,238 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-25 23:53:25,239 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-25 23:53:25,240 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-25 23:53:25,241 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-25 23:53:25,242 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-25 23:53:25,243 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-25 23:53:25,243 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-25 23:53:25,244 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-25 23:53:25,245 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-25 23:53:25,245 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-25 23:53:25,246 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-25 23:53:25,246 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-25 23:53:25,247 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-25 23:53:25,247 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-25 23:53:25,249 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-25 23:53:25,249 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-25 23:53:25,250 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-25 23:53:25,251 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-25 23:53:25,253 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-25 23:53:25,257 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-25 23:53:25,258 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-25 23:53:25,259 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-25 23:53:25,260 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-25 23:53:25,260 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-25 23:53:25,262 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-25 23:53:25,263 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-25 23:53:25,264 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-25 23:53:25,265 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-25 23:53:25,274 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-25 23:53:25,275 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-25 23:53:25,275 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-25 23:53:25,276 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-25 23:53:25,276 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-25 23:53:25,277 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-25 23:53:25,277 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-25 23:53:25,278 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-25 23:53:25,278 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-25 23:53:25,279 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-25 23:53:25,279 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-25 23:53:25,279 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-25 23:53:25,280 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-25 23:53:25,280 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-25 23:53:25,281 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-25 23:53:25,281 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-25 23:53:25,282 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-25 23:53:25,283 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-25 23:53:25,284 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-25 23:53:25,285 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-25 23:53:25,285 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-25 23:53:25,286 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-25 23:53:25,286 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-25 23:53:25,286 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-25 23:53:25,287 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-25 23:53:25,287 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-25 23:53:25,288 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-25 23:53:25,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:53:25,352 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:53:25,459 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 23:53:25,460 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-25 23:53:25,465 WARN L623 FunctionHandler]: Unknown extern function virtio_check_driver_offered_feature [2022-11-25 23:53:25,532 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:25,534 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:25,538 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:25,539 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:25,540 WARN L623 FunctionHandler]: Unknown extern function sg_init_one [2022-11-25 23:53:25,540 WARN L623 FunctionHandler]: Unknown extern function virtqueue_add_sgs [2022-11-25 23:53:25,543 WARN L623 FunctionHandler]: Unknown extern function blk_mq_end_request [2022-11-25 23:53:25,544 WARN L623 FunctionHandler]: Unknown extern function virtqueue_disable_cb [2022-11-25 23:53:25,545 WARN L623 FunctionHandler]: Unknown extern function blk_mq_complete_request [2022-11-25 23:53:25,545 WARN L623 FunctionHandler]: Unknown extern function virtqueue_get_buf [2022-11-25 23:53:25,546 WARN L623 FunctionHandler]: Unknown extern function virtqueue_is_broken [2022-11-25 23:53:25,546 WARN L623 FunctionHandler]: Unknown extern function virtqueue_enable_cb [2022-11-25 23:53:25,547 WARN L623 FunctionHandler]: Unknown extern function blk_mq_start_stopped_hw_queues [2022-11-25 23:53:25,554 WARN L623 FunctionHandler]: Unknown extern function blk_mq_start_request [2022-11-25 23:53:25,554 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_sg [2022-11-25 23:53:25,556 WARN L623 FunctionHandler]: Unknown extern function virtqueue_kick [2022-11-25 23:53:25,556 WARN L623 FunctionHandler]: Unknown extern function blk_mq_stop_hw_queue [2022-11-25 23:53:25,557 WARN L623 FunctionHandler]: Unknown extern function virtqueue_kick_prepare [2022-11-25 23:53:25,558 WARN L623 FunctionHandler]: Unknown extern function virtqueue_notify [2022-11-25 23:53:25,559 WARN L623 FunctionHandler]: Unknown extern function bio_map_kern [2022-11-25 23:53:25,566 WARN L623 FunctionHandler]: Unknown extern function bio_put [2022-11-25 23:53:25,567 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq [2022-11-25 23:53:25,573 WARN L623 FunctionHandler]: Unknown extern function scsi_cmd_blk_ioctl [2022-11-25 23:53:25,581 WARN L623 FunctionHandler]: Unknown extern function __compiletime_assert_322 [2022-11-25 23:53:25,588 WARN L623 FunctionHandler]: Unknown extern function string_get_size [2022-11-25 23:53:25,589 WARN L623 FunctionHandler]: Unknown extern function string_get_size [2022-11-25 23:53:25,589 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-11-25 23:53:25,590 WARN L623 FunctionHandler]: Unknown extern function revalidate_disk [2022-11-25 23:53:25,590 WARN L623 FunctionHandler]: Unknown extern function kobject_uevent_env [2022-11-25 23:53:25,598 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 23:53:25,599 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:25,599 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:25,600 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:25,600 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:25,605 WARN L623 FunctionHandler]: Unknown extern function blk_queue_flush [2022-11-25 23:53:25,608 WARN L623 FunctionHandler]: Unknown extern function blk_queue_flush [2022-11-25 23:53:25,611 WARN L623 FunctionHandler]: Unknown extern function revalidate_disk [2022-11-25 23:53:25,613 WARN L623 FunctionHandler]: Unknown extern function sysfs_streq [2022-11-25 23:53:25,617 WARN L623 FunctionHandler]: Unknown extern function sg_init_table [2022-11-25 23:53:25,620 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-25 23:53:25,620 WARN L623 FunctionHandler]: Unknown extern function ida_simple_get [2022-11-25 23:53:25,622 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-25 23:53:25,623 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-25 23:53:25,628 WARN L623 FunctionHandler]: Unknown extern function blk_mq_alloc_tag_set [2022-11-25 23:53:25,629 WARN L623 FunctionHandler]: Unknown extern function blk_mq_init_queue [2022-11-25 23:53:25,635 WARN L623 FunctionHandler]: Unknown extern function set_disk_ro [2022-11-25 23:53:25,636 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segments [2022-11-25 23:53:25,637 WARN L623 FunctionHandler]: Unknown extern function blk_queue_bounce_limit [2022-11-25 23:53:25,637 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_hw_sectors [2022-11-25 23:53:25,639 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segment_size [2022-11-25 23:53:25,639 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segment_size [2022-11-25 23:53:25,640 WARN L623 FunctionHandler]: Unknown extern function blk_queue_logical_block_size [2022-11-25 23:53:25,642 WARN L623 FunctionHandler]: Unknown extern function blk_queue_physical_block_size [2022-11-25 23:53:25,644 WARN L623 FunctionHandler]: Unknown extern function blk_queue_alignment_offset [2022-11-25 23:53:25,645 WARN L623 FunctionHandler]: Unknown extern function blk_queue_io_min [2022-11-25 23:53:25,647 WARN L623 FunctionHandler]: Unknown extern function blk_queue_io_opt [2022-11-25 23:53:25,647 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-11-25 23:53:25,648 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-11-25 23:53:25,648 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-11-25 23:53:25,652 WARN L623 FunctionHandler]: Unknown extern function blk_mq_free_tag_set [2022-11-25 23:53:25,654 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:25,654 WARN L623 FunctionHandler]: Unknown extern function ida_simple_remove [2022-11-25 23:53:25,656 WARN L623 FunctionHandler]: Unknown extern function flush_work [2022-11-25 23:53:25,659 WARN L623 FunctionHandler]: Unknown extern function blk_mq_free_tag_set [2022-11-25 23:53:25,663 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:25,663 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:53:25,664 WARN L623 FunctionHandler]: Unknown extern function ida_simple_remove [2022-11-25 23:53:25,666 WARN L623 FunctionHandler]: Unknown extern function flush_work [2022-11-25 23:53:25,666 WARN L623 FunctionHandler]: Unknown extern function blk_mq_stop_hw_queues [2022-11-25 23:53:25,672 WARN L623 FunctionHandler]: Unknown extern function blk_mq_start_stopped_hw_queues [2022-11-25 23:53:25,676 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-11-25 23:53:25,677 WARN L623 FunctionHandler]: Unknown extern function register_blkdev [2022-11-25 23:53:25,678 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-11-25 23:53:25,679 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-25 23:53:25,679 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-11-25 23:53:25,680 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-11-25 23:53:25,691 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-25 23:53:25,691 WARN L623 FunctionHandler]: Unknown extern function __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-25 23:53:25,692 WARN L623 FunctionHandler]: Unknown extern function __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-25 23:53:25,692 WARN L623 FunctionHandler]: Unknown extern function alloc_disk [2022-11-25 23:53:25,693 WARN L623 FunctionHandler]: Unknown extern function add_disk [2022-11-25 23:53:25,693 WARN L623 FunctionHandler]: Unknown extern function del_gendisk [2022-11-25 23:53:25,693 WARN L623 FunctionHandler]: Unknown extern function blk_cleanup_queue [2022-11-25 23:53:25,694 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:53:25,694 WARN L623 FunctionHandler]: Unknown extern function del_gendisk [2022-11-25 23:53:25,694 WARN L623 FunctionHandler]: Unknown extern function blk_cleanup_queue [2022-11-25 23:53:25,695 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-11-25 23:53:25,695 WARN L623 FunctionHandler]: Unknown extern function register_virtio_driver [2022-11-25 23:53:25,696 WARN L623 FunctionHandler]: Unknown extern function unregister_virtio_driver [2022-11-25 23:53:25,716 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-25 23:53:25,725 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-25 23:53:25,747 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-25 23:53:25,748 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-25 23:53:25,748 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-25 23:53:25,748 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-25 23:53:25,750 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-25 23:53:25,750 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-25 23:53:25,751 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-25 23:53:25,751 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-25 23:53:25,797 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-25 23:53:25,797 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-25 23:53:25,798 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-25 23:53:25,798 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-25 23:53:25,798 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-25 23:53:25,799 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-25 23:53:25,799 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-25 23:53:25,799 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-25 23:53:25,800 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-25 23:53:25,800 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-25 23:53:25,800 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-25 23:53:25,800 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-25 23:53:25,801 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-25 23:53:25,801 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-25 23:53:25,801 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-25 23:53:25,802 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-25 23:53:25,802 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-25 23:53:25,802 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-25 23:53:25,802 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-25 23:53:25,803 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-25 23:53:25,803 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-25 23:53:25,803 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-25 23:53:25,804 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-25 23:53:25,804 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-25 23:53:25,804 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-25 23:53:25,804 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-25 23:53:25,805 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-25 23:53:25,805 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-25 23:53:25,805 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-25 23:53:25,806 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-25 23:53:25,806 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-25 23:53:25,806 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-25 23:53:25,806 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-25 23:53:25,809 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-25 23:53:25,810 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-25 23:53:25,810 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-25 23:53:25,810 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-25 23:53:25,811 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-25 23:53:25,811 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-25 23:53:25,811 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-25 23:53:25,812 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-25 23:53:25,812 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-25 23:53:25,812 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-25 23:53:25,813 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-25 23:53:25,813 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-25 23:53:25,814 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-25 23:53:25,814 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-25 23:53:25,814 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-25 23:53:25,815 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-25 23:53:25,815 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-25 23:53:25,816 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-25 23:53:25,816 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-25 23:53:25,816 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-25 23:53:25,817 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-25 23:53:25,822 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-25 23:53:25,822 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-25 23:53:25,823 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-25 23:53:25,823 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-25 23:53:25,823 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-25 23:53:25,824 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-25 23:53:25,824 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-25 23:53:25,824 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-25 23:53:25,825 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-25 23:53:25,826 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-25 23:53:25,826 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-25 23:53:25,827 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-25 23:53:25,828 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-25 23:53:25,828 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-25 23:53:25,828 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-25 23:53:25,829 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-25 23:53:25,830 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-25 23:53:25,835 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-25 23:53:25,836 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-25 23:53:25,836 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-25 23:53:25,837 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-25 23:53:25,837 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-25 23:53:25,837 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-25 23:53:25,838 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-25 23:53:25,838 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-25 23:53:25,838 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_b20ba565-8805-4112-978f-2946d67fce7c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-25 23:53:25,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:53:26,024 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:53:26,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26 WrapperNode [2022-11-25 23:53:26,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:53:26,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:53:26,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:53:26,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:53:26,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,328 INFO L138 Inliner]: procedures = 554, calls = 1454, calls flagged for inlining = 247, calls inlined = 157, statements flattened = 3201 [2022-11-25 23:53:26,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:53:26,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:53:26,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:53:26,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:53:26,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:53:26,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:53:26,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:53:26,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:53:26,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (1/1) ... [2022-11-25 23:53:26,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:53:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:53:26,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:53:26,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:53:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2022-11-25 23:53:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2022-11-25 23:53:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2022-11-25 23:53:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2022-11-25 23:53:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 23:53:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 23:53:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-25 23:53:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-25 23:53:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_del_gendisk [2022-11-25 23:53:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_del_gendisk [2022-11-25 23:53:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-25 23:53:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-25 23:53:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2022-11-25 23:53:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2022-11-25 23:53:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure init_vq [2022-11-25 23:53:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure init_vq [2022-11-25 23:53:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2022-11-25 23:53:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2022-11-25 23:53:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_config_changed [2022-11-25 23:53:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_config_changed [2022-11-25 23:53:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-25 23:53:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-25 23:53:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-25 23:53:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-25 23:53:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2022-11-25 23:53:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2022-11-25 23:53:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:53:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_cache_mode [2022-11-25 23:53:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_cache_mode [2022-11-25 23:53:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-25 23:53:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-25 23:53:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2022-11-25 23:53:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2022-11-25 23:53:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure string_get_size [2022-11-25 23:53:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure string_get_size [2022-11-25 23:53:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 23:53:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-25 23:53:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-25 23:53:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_update_cache_mode [2022-11-25 23:53:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_update_cache_mode [2022-11-25 23:53:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:53:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-25 23:53:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-25 23:53:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2022-11-25 23:53:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2022-11-25 23:53:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-25 23:53:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-25 23:53:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-25 23:53:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-25 23:53:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_flush [2022-11-25 23:53:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_flush [2022-11-25 23:53:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-25 23:53:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-25 23:53:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure ida_simple_remove [2022-11-25 23:53:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_simple_remove [2022-11-25 23:53:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:53:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2022-11-25 23:53:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2022-11-25 23:53:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-25 23:53:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-25 23:53:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2022-11-25 23:53:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2022-11-25 23:53:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-25 23:53:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-25 23:53:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-25 23:53:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-25 23:53:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2022-11-25 23:53:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2022-11-25 23:53:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-25 23:53:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-25 23:53:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread8 [2022-11-25 23:53:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread8 [2022-11-25 23:53:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:53:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure revalidate_disk [2022-11-25 23:53:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure revalidate_disk [2022-11-25 23:53:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:53:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-25 23:53:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-25 23:53:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:53:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-25 23:53:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-25 23:53:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 23:53:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 23:53:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2022-11-25 23:53:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2022-11-25 23:53:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_cache_type_store [2022-11-25 23:53:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_cache_type_store [2022-11-25 23:53:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-25 23:53:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-25 23:53:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2022-11-25 23:53:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2022-11-25 23:53:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:53:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:53:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-25 23:53:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-25 23:53:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 23:53:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 23:53:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 23:53:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 23:53:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-25 23:53:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-25 23:53:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread32 [2022-11-25 23:53:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread32 [2022-11-25 23:53:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-25 23:53:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-25 23:53:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-25 23:53:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-25 23:53:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2022-11-25 23:53:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2022-11-25 23:53:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-25 23:53:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-25 23:53:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-25 23:53:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-25 23:53:26,610 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread16 [2022-11-25 23:53:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread16 [2022-11-25 23:53:26,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2022-11-25 23:53:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2022-11-25 23:53:26,611 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2022-11-25 23:53:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2022-11-25 23:53:26,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2022-11-25 23:53:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2022-11-25 23:53:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread64 [2022-11-25 23:53:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread64 [2022-11-25 23:53:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:53:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-25 23:53:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-25 23:53:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_block_request__double_get [2022-11-25 23:53:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_block_request__double_get [2022-11-25 23:53:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-25 23:53:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-25 23:53:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:53:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:53:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure virtio32_to_cpu [2022-11-25 23:53:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio32_to_cpu [2022-11-25 23:53:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-25 23:53:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-25 23:53:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-25 23:53:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-25 23:53:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2022-11-25 23:53:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2022-11-25 23:53:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2022-11-25 23:53:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2022-11-25 23:53:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-25 23:53:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-25 23:53:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2022-11-25 23:53:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2022-11-25 23:53:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-25 23:53:26,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-25 23:53:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-25 23:53:26,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-25 23:53:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 23:53:26,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 23:53:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:53:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-25 23:53:26,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-25 23:53:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 23:53:26,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 23:53:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-25 23:53:26,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-25 23:53:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-25 23:53:26,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-25 23:53:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-25 23:53:26,618 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-25 23:53:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2022-11-25 23:53:26,618 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2022-11-25 23:53:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-25 23:53:26,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-25 23:53:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-25 23:53:26,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-25 23:53:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-25 23:53:26,619 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-25 23:53:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_put_disk [2022-11-25 23:53:26,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_put_disk [2022-11-25 23:53:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:53:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_device_ready [2022-11-25 23:53:26,620 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_device_ready [2022-11-25 23:53:27,537 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:53:27,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:53:28,178 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 23:53:30,279 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:53:30,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:53:30,877 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-25 23:53:30,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:53:30 BoogieIcfgContainer [2022-11-25 23:53:30,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:53:30,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:53:30,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:53:30,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:53:30,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:53:21" (1/3) ... [2022-11-25 23:53:30,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7deda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:53:30, skipping insertion in model container [2022-11-25 23:53:30,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:53:26" (2/3) ... [2022-11-25 23:53:30,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7deda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:53:30, skipping insertion in model container [2022-11-25 23:53:30,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:53:30" (3/3) ... [2022-11-25 23:53:30,899 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-25 23:53:30,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:53:30,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-25 23:53:31,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:53:31,042 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;@3a64a8b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:53:31,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-25 23:53:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 943 states, 561 states have (on average 1.3493761140819964) internal successors, (757), 602 states have internal predecessors, (757), 281 states have call successors, (281), 80 states have call predecessors, (281), 79 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-25 23:53:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 23:53:31,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:31,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:31,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1286415141, now seen corresponding path program 1 times [2022-11-25 23:53:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:31,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426232184] [2022-11-25 23:53:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:31,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:31,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426232184] [2022-11-25 23:53:31,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426232184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:31,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:31,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:31,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984556270] [2022-11-25 23:53:31,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:31,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:31,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:32,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:32,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:32,038 INFO L87 Difference]: Start difference. First operand has 943 states, 561 states have (on average 1.3493761140819964) internal successors, (757), 602 states have internal predecessors, (757), 281 states have call successors, (281), 80 states have call predecessors, (281), 79 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:53:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:33,534 INFO L93 Difference]: Finished difference Result 1749 states and 2489 transitions. [2022-11-25 23:53:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2022-11-25 23:53:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:33,558 INFO L225 Difference]: With dead ends: 1749 [2022-11-25 23:53:33,558 INFO L226 Difference]: Without dead ends: 821 [2022-11-25 23:53:33,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:33,576 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 1058 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:33,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1820 Invalid, 325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:53:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-25 23:53:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2022-11-25 23:53:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 476 states have (on average 1.2415966386554622) internal successors, (591), 525 states have internal predecessors, (591), 236 states have call successors, (236), 79 states have call predecessors, (236), 78 states have return successors, (234), 232 states have call predecessors, (234), 234 states have call successors, (234) [2022-11-25 23:53:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1061 transitions. [2022-11-25 23:53:33,708 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1061 transitions. Word has length 38 [2022-11-25 23:53:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:33,710 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1061 transitions. [2022-11-25 23:53:33,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:53:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1061 transitions. [2022-11-25 23:53:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 23:53:33,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:33,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:33,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:53:33,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash -767846097, now seen corresponding path program 1 times [2022-11-25 23:53:33,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492202138] [2022-11-25 23:53:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:33,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:34,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492202138] [2022-11-25 23:53:34,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492202138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:34,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:34,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:34,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759494510] [2022-11-25 23:53:34,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:34,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:34,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:34,295 INFO L87 Difference]: Start difference. First operand 821 states and 1061 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:53:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:36,039 INFO L93 Difference]: Finished difference Result 1487 states and 1916 transitions. [2022-11-25 23:53:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:53:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2022-11-25 23:53:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:36,061 INFO L225 Difference]: With dead ends: 1487 [2022-11-25 23:53:36,061 INFO L226 Difference]: Without dead ends: 1485 [2022-11-25 23:53:36,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:36,065 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 862 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:36,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 3213 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 23:53:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2022-11-25 23:53:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1311. [2022-11-25 23:53:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 760 states have (on average 1.236842105263158) internal successors, (940), 825 states have internal predecessors, (940), 388 states have call successors, (388), 133 states have call predecessors, (388), 132 states have return successors, (401), 381 states have call predecessors, (401), 386 states have call successors, (401) [2022-11-25 23:53:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1729 transitions. [2022-11-25 23:53:36,201 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1729 transitions. Word has length 43 [2022-11-25 23:53:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:36,202 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 1729 transitions. [2022-11-25 23:53:36,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:53:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1729 transitions. [2022-11-25 23:53:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 23:53:36,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:36,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:36,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:53:36,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:36,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:36,225 INFO L85 PathProgramCache]: Analyzing trace with hash 840896797, now seen corresponding path program 1 times [2022-11-25 23:53:36,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:36,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912514469] [2022-11-25 23:53:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:36,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:36,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912514469] [2022-11-25 23:53:36,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912514469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:36,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:36,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:36,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040669220] [2022-11-25 23:53:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:36,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:36,532 INFO L87 Difference]: Start difference. First operand 1311 states and 1729 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 23:53:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:37,767 INFO L93 Difference]: Finished difference Result 1311 states and 1729 transitions. [2022-11-25 23:53:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:37,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 48 [2022-11-25 23:53:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:37,777 INFO L225 Difference]: With dead ends: 1311 [2022-11-25 23:53:37,778 INFO L226 Difference]: Without dead ends: 1309 [2022-11-25 23:53:37,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:37,780 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 1040 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:37,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1790 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:53:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-25 23:53:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1309. [2022-11-25 23:53:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 759 states have (on average 1.2358366271409749) internal successors, (938), 823 states have internal predecessors, (938), 388 states have call successors, (388), 133 states have call predecessors, (388), 132 states have return successors, (401), 381 states have call predecessors, (401), 386 states have call successors, (401) [2022-11-25 23:53:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1727 transitions. [2022-11-25 23:53:37,914 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1727 transitions. Word has length 48 [2022-11-25 23:53:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:37,915 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1727 transitions. [2022-11-25 23:53:37,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 23:53:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1727 transitions. [2022-11-25 23:53:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:53:37,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:37,917 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:37,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:53:37,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:37,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:37,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1972611560, now seen corresponding path program 1 times [2022-11-25 23:53:37,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:37,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267926225] [2022-11-25 23:53:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:37,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:38,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:38,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267926225] [2022-11-25 23:53:38,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267926225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:38,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:38,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222242689] [2022-11-25 23:53:38,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:38,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:38,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:38,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:38,283 INFO L87 Difference]: Start difference. First operand 1309 states and 1727 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:53:39,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:39,743 INFO L93 Difference]: Finished difference Result 1725 states and 2203 transitions. [2022-11-25 23:53:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:53:39,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2022-11-25 23:53:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:39,758 INFO L225 Difference]: With dead ends: 1725 [2022-11-25 23:53:39,758 INFO L226 Difference]: Without dead ends: 1723 [2022-11-25 23:53:39,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:39,761 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 1026 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:39,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2186 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:53:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2022-11-25 23:53:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1680. [2022-11-25 23:53:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 972 states have (on average 1.228395061728395) internal successors, (1194), 1042 states have internal predecessors, (1194), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2177 transitions. [2022-11-25 23:53:39,903 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2177 transitions. Word has length 53 [2022-11-25 23:53:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:39,903 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2177 transitions. [2022-11-25 23:53:39,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:53:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2177 transitions. [2022-11-25 23:53:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 23:53:39,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:39,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:39,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:53:39,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash -327768910, now seen corresponding path program 1 times [2022-11-25 23:53:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:39,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865835345] [2022-11-25 23:53:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:39,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:40,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:40,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865835345] [2022-11-25 23:53:40,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865835345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:40,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:40,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633606917] [2022-11-25 23:53:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:40,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:40,150 INFO L87 Difference]: Start difference. First operand 1680 states and 2177 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 23:53:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:41,572 INFO L93 Difference]: Finished difference Result 1680 states and 2177 transitions. [2022-11-25 23:53:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:41,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 58 [2022-11-25 23:53:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:41,584 INFO L225 Difference]: With dead ends: 1680 [2022-11-25 23:53:41,585 INFO L226 Difference]: Without dead ends: 1678 [2022-11-25 23:53:41,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:41,587 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1037 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:41,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1788 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:53:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-11-25 23:53:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1678. [2022-11-25 23:53:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 971 states have (on average 1.2265705458290421) internal successors, (1191), 1040 states have internal predecessors, (1191), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2174 transitions. [2022-11-25 23:53:41,742 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2174 transitions. Word has length 58 [2022-11-25 23:53:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:41,743 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2174 transitions. [2022-11-25 23:53:41,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-25 23:53:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2174 transitions. [2022-11-25 23:53:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:53:41,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:41,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:53:41,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -223452677, now seen corresponding path program 1 times [2022-11-25 23:53:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:41,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069419388] [2022-11-25 23:53:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:41,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:42,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:42,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069419388] [2022-11-25 23:53:42,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069419388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:42,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:42,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:42,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686615861] [2022-11-25 23:53:42,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:42,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:42,019 INFO L87 Difference]: Start difference. First operand 1678 states and 2174 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 23:53:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:43,262 INFO L93 Difference]: Finished difference Result 1678 states and 2174 transitions. [2022-11-25 23:53:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:43,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 63 [2022-11-25 23:53:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:43,275 INFO L225 Difference]: With dead ends: 1678 [2022-11-25 23:53:43,275 INFO L226 Difference]: Without dead ends: 1676 [2022-11-25 23:53:43,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:43,277 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1034 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:43,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1784 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:53:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-11-25 23:53:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2022-11-25 23:53:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 970 states have (on average 1.2247422680412372) internal successors, (1188), 1038 states have internal predecessors, (1188), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2171 transitions. [2022-11-25 23:53:43,448 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2171 transitions. Word has length 63 [2022-11-25 23:53:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:43,449 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2171 transitions. [2022-11-25 23:53:43,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 23:53:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2171 transitions. [2022-11-25 23:53:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 23:53:43,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:43,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:43,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:53:43,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1075536400, now seen corresponding path program 1 times [2022-11-25 23:53:43,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:43,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356199632] [2022-11-25 23:53:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:43,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:43,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:43,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356199632] [2022-11-25 23:53:43,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356199632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:43,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:43,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:43,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061266766] [2022-11-25 23:53:43,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:43,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:43,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:43,704 INFO L87 Difference]: Start difference. First operand 1676 states and 2171 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:53:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:45,005 INFO L93 Difference]: Finished difference Result 1676 states and 2171 transitions. [2022-11-25 23:53:45,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:45,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 68 [2022-11-25 23:53:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:45,016 INFO L225 Difference]: With dead ends: 1676 [2022-11-25 23:53:45,016 INFO L226 Difference]: Without dead ends: 1674 [2022-11-25 23:53:45,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:45,018 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 1031 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:45,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1780 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:53:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-11-25 23:53:45,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1674. [2022-11-25 23:53:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 969 states have (on average 1.2229102167182662) internal successors, (1185), 1036 states have internal predecessors, (1185), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2168 transitions. [2022-11-25 23:53:45,241 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2168 transitions. Word has length 68 [2022-11-25 23:53:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:45,242 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 2168 transitions. [2022-11-25 23:53:45,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 23:53:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2168 transitions. [2022-11-25 23:53:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:53:45,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:45,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:45,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:53:45,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:45,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1690475699, now seen corresponding path program 1 times [2022-11-25 23:53:45,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:45,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748715992] [2022-11-25 23:53:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:45,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:45,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748715992] [2022-11-25 23:53:45,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748715992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:45,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:45,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560731240] [2022-11-25 23:53:45,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:45,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:45,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:45,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:45,478 INFO L87 Difference]: Start difference. First operand 1674 states and 2168 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:53:46,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:46,928 INFO L93 Difference]: Finished difference Result 1674 states and 2168 transitions. [2022-11-25 23:53:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-11-25 23:53:46,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:46,942 INFO L225 Difference]: With dead ends: 1674 [2022-11-25 23:53:46,943 INFO L226 Difference]: Without dead ends: 1672 [2022-11-25 23:53:46,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:46,945 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 1032 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:46,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1772 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:53:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-25 23:53:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1672. [2022-11-25 23:53:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 968 states have (on average 1.2210743801652892) internal successors, (1182), 1034 states have internal predecessors, (1182), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2165 transitions. [2022-11-25 23:53:47,150 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2165 transitions. Word has length 73 [2022-11-25 23:53:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:47,151 INFO L495 AbstractCegarLoop]: Abstraction has 1672 states and 2165 transitions. [2022-11-25 23:53:47,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:53:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2165 transitions. [2022-11-25 23:53:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 23:53:47,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:47,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:53:47,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1049363760, now seen corresponding path program 1 times [2022-11-25 23:53:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:47,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406450439] [2022-11-25 23:53:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:47,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:47,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406450439] [2022-11-25 23:53:47,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406450439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:47,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:47,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494002006] [2022-11-25 23:53:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:47,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:47,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:47,399 INFO L87 Difference]: Start difference. First operand 1672 states and 2165 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:53:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:48,612 INFO L93 Difference]: Finished difference Result 1672 states and 2165 transitions. [2022-11-25 23:53:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:48,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2022-11-25 23:53:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:48,622 INFO L225 Difference]: With dead ends: 1672 [2022-11-25 23:53:48,623 INFO L226 Difference]: Without dead ends: 1670 [2022-11-25 23:53:48,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:48,625 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 1024 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:48,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1772 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 23:53:48,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2022-11-25 23:53:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2022-11-25 23:53:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 967 states have (on average 1.21923474663909) internal successors, (1179), 1032 states have internal predecessors, (1179), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2162 transitions. [2022-11-25 23:53:48,848 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2162 transitions. Word has length 75 [2022-11-25 23:53:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:48,849 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2162 transitions. [2022-11-25 23:53:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:53:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2162 transitions. [2022-11-25 23:53:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 23:53:48,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:48,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:48,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:53:48,858 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1817092006, now seen corresponding path program 1 times [2022-11-25 23:53:48,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:48,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037756969] [2022-11-25 23:53:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:48,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:49,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:49,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037756969] [2022-11-25 23:53:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037756969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:49,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:49,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833112202] [2022-11-25 23:53:49,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:49,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:49,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:49,083 INFO L87 Difference]: Start difference. First operand 1670 states and 2162 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 23:53:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:50,501 INFO L93 Difference]: Finished difference Result 1670 states and 2162 transitions. [2022-11-25 23:53:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:50,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-11-25 23:53:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:50,512 INFO L225 Difference]: With dead ends: 1670 [2022-11-25 23:53:50,513 INFO L226 Difference]: Without dead ends: 1668 [2022-11-25 23:53:50,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:50,515 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 1023 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:50,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1768 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 23:53:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-25 23:53:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2022-11-25 23:53:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 966 states have (on average 1.2173913043478262) internal successors, (1176), 1030 states have internal predecessors, (1176), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2159 transitions. [2022-11-25 23:53:50,756 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2159 transitions. Word has length 80 [2022-11-25 23:53:50,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:50,757 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2159 transitions. [2022-11-25 23:53:50,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 23:53:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2159 transitions. [2022-11-25 23:53:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-25 23:53:50,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:50,761 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:53:50,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:50,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash -985708471, now seen corresponding path program 1 times [2022-11-25 23:53:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:50,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525643392] [2022-11-25 23:53:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:50,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:50,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525643392] [2022-11-25 23:53:50,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525643392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:50,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:50,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844611063] [2022-11-25 23:53:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:50,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:50,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:50,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:50,989 INFO L87 Difference]: Start difference. First operand 1668 states and 2159 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 23:53:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:52,084 INFO L93 Difference]: Finished difference Result 1668 states and 2159 transitions. [2022-11-25 23:53:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:52,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-25 23:53:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:52,095 INFO L225 Difference]: With dead ends: 1668 [2022-11-25 23:53:52,096 INFO L226 Difference]: Without dead ends: 1666 [2022-11-25 23:53:52,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:52,098 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1020 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:52,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1764 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:53:52,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-11-25 23:53:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2022-11-25 23:53:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 965 states have (on average 1.2155440414507772) internal successors, (1173), 1028 states have internal predecessors, (1173), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2156 transitions. [2022-11-25 23:53:52,414 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2156 transitions. Word has length 85 [2022-11-25 23:53:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:52,415 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2156 transitions. [2022-11-25 23:53:52,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 23:53:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2156 transitions. [2022-11-25 23:53:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 23:53:52,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:52,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:53:52,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:53:52,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash -133599614, now seen corresponding path program 1 times [2022-11-25 23:53:52,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:52,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448518432] [2022-11-25 23:53:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:53:52,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:52,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448518432] [2022-11-25 23:53:52,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448518432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:52,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:52,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:53:52,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173833172] [2022-11-25 23:53:52,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:52,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:53:52,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:53:52,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:53:52,644 INFO L87 Difference]: Start difference. First operand 1666 states and 2156 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 23:53:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:54,241 INFO L93 Difference]: Finished difference Result 1666 states and 2156 transitions. [2022-11-25 23:53:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:53:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 90 [2022-11-25 23:53:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:54,252 INFO L225 Difference]: With dead ends: 1666 [2022-11-25 23:53:54,252 INFO L226 Difference]: Without dead ends: 1664 [2022-11-25 23:53:54,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:53:54,254 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1017 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:54,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 1760 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 23:53:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-11-25 23:53:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2022-11-25 23:53:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 964 states have (on average 1.2136929460580912) internal successors, (1170), 1026 states have internal predecessors, (1170), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:53:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2153 transitions. [2022-11-25 23:53:54,487 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2153 transitions. Word has length 90 [2022-11-25 23:53:54,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:54,487 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2153 transitions. [2022-11-25 23:53:54,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 23:53:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2153 transitions. [2022-11-25 23:53:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 23:53:54,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:54,490 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-25 23:53:54,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:53:54,491 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:53:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1350265433, now seen corresponding path program 1 times [2022-11-25 23:53:54,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:54,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380863956] [2022-11-25 23:53:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:54,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-25 23:53:55,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:55,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380863956] [2022-11-25 23:53:55,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380863956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:55,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:55,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:53:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881591091] [2022-11-25 23:53:55,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:53:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:53:55,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:53:55,503 INFO L87 Difference]: Start difference. First operand 1664 states and 2153 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:54:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:00,046 INFO L93 Difference]: Finished difference Result 2077 states and 2836 transitions. [2022-11-25 23:54:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:54:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2022-11-25 23:54:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:00,060 INFO L225 Difference]: With dead ends: 2077 [2022-11-25 23:54:00,061 INFO L226 Difference]: Without dead ends: 2075 [2022-11-25 23:54:00,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:54:00,064 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 1037 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 3798 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:00,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 3798 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 23:54:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-11-25 23:54:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1662. [2022-11-25 23:54:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 963 states have (on average 1.2118380062305296) internal successors, (1167), 1024 states have internal predecessors, (1167), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:54:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2150 transitions. [2022-11-25 23:54:00,393 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2150 transitions. Word has length 114 [2022-11-25 23:54:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:00,394 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2150 transitions. [2022-11-25 23:54:00,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:54:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2150 transitions. [2022-11-25 23:54:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-25 23:54:00,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:00,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:54:00,398 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1157235881, now seen corresponding path program 1 times [2022-11-25 23:54:00,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:00,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152495816] [2022-11-25 23:54:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:00,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:00,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:00,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152495816] [2022-11-25 23:54:00,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152495816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:00,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:00,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711947762] [2022-11-25 23:54:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:00,653 INFO L87 Difference]: Start difference. First operand 1662 states and 2150 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:01,751 INFO L93 Difference]: Finished difference Result 1662 states and 2150 transitions. [2022-11-25 23:54:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2022-11-25 23:54:01,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:01,761 INFO L225 Difference]: With dead ends: 1662 [2022-11-25 23:54:01,761 INFO L226 Difference]: Without dead ends: 1660 [2022-11-25 23:54:01,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:01,763 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1012 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:01,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1752 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:54:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2022-11-25 23:54:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1660. [2022-11-25 23:54:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 962 states have (on average 1.20997920997921) internal successors, (1164), 1022 states have internal predecessors, (1164), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:54:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2147 transitions. [2022-11-25 23:54:02,075 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2147 transitions. Word has length 95 [2022-11-25 23:54:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:02,076 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2147 transitions. [2022-11-25 23:54:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2147 transitions. [2022-11-25 23:54:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 23:54:02,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:02,079 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-25 23:54:02,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:54:02,079 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash 980716992, now seen corresponding path program 1 times [2022-11-25 23:54:02,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:02,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844022916] [2022-11-25 23:54:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:02,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-25 23:54:02,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:02,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844022916] [2022-11-25 23:54:02,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844022916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:02,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:02,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:54:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608841280] [2022-11-25 23:54:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:02,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:02,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:02,296 INFO L87 Difference]: Start difference. First operand 1660 states and 2147 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:54:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:03,163 INFO L93 Difference]: Finished difference Result 3292 states and 4268 transitions. [2022-11-25 23:54:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:03,164 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2022-11-25 23:54:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:03,173 INFO L225 Difference]: With dead ends: 3292 [2022-11-25 23:54:03,173 INFO L226 Difference]: Without dead ends: 1654 [2022-11-25 23:54:03,179 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 23:54:03,180 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 998 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:03,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 872 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:54:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2022-11-25 23:54:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1654. [2022-11-25 23:54:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 957 states have (on average 1.206896551724138) internal successors, (1155), 1016 states have internal predecessors, (1155), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:54:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2138 transitions. [2022-11-25 23:54:03,438 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2138 transitions. Word has length 117 [2022-11-25 23:54:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:03,439 INFO L495 AbstractCegarLoop]: Abstraction has 1654 states and 2138 transitions. [2022-11-25 23:54:03,439 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:54:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2138 transitions. [2022-11-25 23:54:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 23:54:03,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:03,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:03,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:54:03,443 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash 485634421, now seen corresponding path program 1 times [2022-11-25 23:54:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:03,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051043358] [2022-11-25 23:54:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:03,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:03,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:03,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051043358] [2022-11-25 23:54:03,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051043358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:03,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:03,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391802162] [2022-11-25 23:54:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:03,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:03,656 INFO L87 Difference]: Start difference. First operand 1654 states and 2138 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 23:54:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:04,820 INFO L93 Difference]: Finished difference Result 1654 states and 2138 transitions. [2022-11-25 23:54:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-11-25 23:54:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:04,829 INFO L225 Difference]: With dead ends: 1654 [2022-11-25 23:54:04,830 INFO L226 Difference]: Without dead ends: 1652 [2022-11-25 23:54:04,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:04,832 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1004 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:04,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1738 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:54:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-11-25 23:54:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1652. [2022-11-25 23:54:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 956 states have (on average 1.205020920502092) internal successors, (1152), 1014 states have internal predecessors, (1152), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:54:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2135 transitions. [2022-11-25 23:54:05,111 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2135 transitions. Word has length 100 [2022-11-25 23:54:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:05,111 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2135 transitions. [2022-11-25 23:54:05,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 23:54:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2135 transitions. [2022-11-25 23:54:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 23:54:05,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:05,116 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:05,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:54:05,117 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_block_request__double_getErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1369745483, now seen corresponding path program 1 times [2022-11-25 23:54:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:05,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201442361] [2022-11-25 23:54:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-25 23:54:05,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:05,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201442361] [2022-11-25 23:54:05,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201442361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:05,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:05,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:54:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779861928] [2022-11-25 23:54:05,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:05,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:54:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:54:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:05,455 INFO L87 Difference]: Start difference. First operand 1652 states and 2135 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:54:07,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:07,075 INFO L93 Difference]: Finished difference Result 1675 states and 2149 transitions. [2022-11-25 23:54:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:54:07,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2022-11-25 23:54:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:07,085 INFO L225 Difference]: With dead ends: 1675 [2022-11-25 23:54:07,085 INFO L226 Difference]: Without dead ends: 1673 [2022-11-25 23:54:07,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:54:07,088 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 983 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:07,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 3039 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:54:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2022-11-25 23:54:07,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1652. [2022-11-25 23:54:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 956 states have (on average 1.202928870292887) internal successors, (1150), 1014 states have internal predecessors, (1150), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:54:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2133 transitions. [2022-11-25 23:54:07,363 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2133 transitions. Word has length 127 [2022-11-25 23:54:07,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:07,365 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2133 transitions. [2022-11-25 23:54:07,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:54:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2133 transitions. [2022-11-25 23:54:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 23:54:07,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:07,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 23:54:07,370 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash -299355369, now seen corresponding path program 1 times [2022-11-25 23:54:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:07,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202597777] [2022-11-25 23:54:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:07,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:07,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202597777] [2022-11-25 23:54:07,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202597777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:07,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:07,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781431345] [2022-11-25 23:54:07,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:07,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:07,671 INFO L87 Difference]: Start difference. First operand 1652 states and 2133 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:54:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:09,064 INFO L93 Difference]: Finished difference Result 1652 states and 2133 transitions. [2022-11-25 23:54:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:09,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2022-11-25 23:54:09,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:09,073 INFO L225 Difference]: With dead ends: 1652 [2022-11-25 23:54:09,073 INFO L226 Difference]: Without dead ends: 1650 [2022-11-25 23:54:09,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:09,075 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1001 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:09,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1734 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 23:54:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-11-25 23:54:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-11-25 23:54:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 955 states have (on average 1.2010471204188482) internal successors, (1147), 1012 states have internal predecessors, (1147), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-25 23:54:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2130 transitions. [2022-11-25 23:54:09,372 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2130 transitions. Word has length 105 [2022-11-25 23:54:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:09,373 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2130 transitions. [2022-11-25 23:54:09,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:54:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2130 transitions. [2022-11-25 23:54:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 23:54:09,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:09,378 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:09,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 23:54:09,379 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1359241489, now seen corresponding path program 1 times [2022-11-25 23:54:09,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:09,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806131002] [2022-11-25 23:54:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-25 23:54:09,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:09,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806131002] [2022-11-25 23:54:09,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806131002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:09,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:09,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:54:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998426274] [2022-11-25 23:54:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:09,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:54:09,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:54:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:09,882 INFO L87 Difference]: Start difference. First operand 1650 states and 2130 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 23:54:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:12,172 INFO L93 Difference]: Finished difference Result 1694 states and 2172 transitions. [2022-11-25 23:54:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:54:12,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2022-11-25 23:54:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:12,181 INFO L225 Difference]: With dead ends: 1694 [2022-11-25 23:54:12,181 INFO L226 Difference]: Without dead ends: 1692 [2022-11-25 23:54:12,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:54:12,183 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 951 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:12,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 2647 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 23:54:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-11-25 23:54:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1692. [2022-11-25 23:54:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 978 states have (on average 1.196319018404908) internal successors, (1170), 1034 states have internal predecessors, (1170), 493 states have call successors, (493), 206 states have call predecessors, (493), 205 states have return successors, (506), 482 states have call predecessors, (506), 491 states have call successors, (506) [2022-11-25 23:54:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2169 transitions. [2022-11-25 23:54:12,462 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2169 transitions. Word has length 131 [2022-11-25 23:54:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:12,463 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 2169 transitions. [2022-11-25 23:54:12,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 23:54:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2169 transitions. [2022-11-25 23:54:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 23:54:12,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:12,466 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:12,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 23:54:12,467 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash 941996136, now seen corresponding path program 1 times [2022-11-25 23:54:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:12,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099411526] [2022-11-25 23:54:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-25 23:54:13,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:13,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099411526] [2022-11-25 23:54:13,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099411526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:13,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:13,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 23:54:13,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405252194] [2022-11-25 23:54:13,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:13,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:54:13,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:54:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:54:13,344 INFO L87 Difference]: Start difference. First operand 1692 states and 2169 transitions. Second operand has 10 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 23:54:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:21,081 INFO L93 Difference]: Finished difference Result 4346 states and 5897 transitions. [2022-11-25 23:54:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:54:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 134 [2022-11-25 23:54:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:21,098 INFO L225 Difference]: With dead ends: 4346 [2022-11-25 23:54:21,098 INFO L226 Difference]: Without dead ends: 2674 [2022-11-25 23:54:21,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:54:21,107 INFO L413 NwaCegarLoop]: 1473 mSDtfsCounter, 452 mSDsluCounter, 10888 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 12361 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:21,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 12361 Invalid, 2547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [339 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-25 23:54:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-11-25 23:54:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1704. [2022-11-25 23:54:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 986 states have (on average 1.1947261663286004) internal successors, (1178), 1042 states have internal predecessors, (1178), 497 states have call successors, (497), 206 states have call predecessors, (497), 205 states have return successors, (510), 486 states have call predecessors, (510), 495 states have call successors, (510) [2022-11-25 23:54:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2185 transitions. [2022-11-25 23:54:21,569 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2185 transitions. Word has length 134 [2022-11-25 23:54:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:21,570 INFO L495 AbstractCegarLoop]: Abstraction has 1704 states and 2185 transitions. [2022-11-25 23:54:21,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 23:54:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2185 transitions. [2022-11-25 23:54:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 23:54:21,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:21,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:21,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 23:54:21,575 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:21,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1427166701, now seen corresponding path program 1 times [2022-11-25 23:54:21,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:21,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583405993] [2022-11-25 23:54:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:22,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:22,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583405993] [2022-11-25 23:54:22,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583405993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:22,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:22,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:22,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510225933] [2022-11-25 23:54:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:22,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:22,191 INFO L87 Difference]: Start difference. First operand 1704 states and 2185 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:54:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:23,516 INFO L93 Difference]: Finished difference Result 1704 states and 2185 transitions. [2022-11-25 23:54:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:23,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 110 [2022-11-25 23:54:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:23,528 INFO L225 Difference]: With dead ends: 1704 [2022-11-25 23:54:23,529 INFO L226 Difference]: Without dead ends: 1702 [2022-11-25 23:54:23,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:23,531 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 996 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:23,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1726 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:54:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-11-25 23:54:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2022-11-25 23:54:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 985 states have (on average 1.1928934010152283) internal successors, (1175), 1040 states have internal predecessors, (1175), 497 states have call successors, (497), 206 states have call predecessors, (497), 205 states have return successors, (510), 486 states have call predecessors, (510), 495 states have call successors, (510) [2022-11-25 23:54:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2182 transitions. [2022-11-25 23:54:23,854 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2182 transitions. Word has length 110 [2022-11-25 23:54:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:23,855 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2182 transitions. [2022-11-25 23:54:23,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 23:54:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2182 transitions. [2022-11-25 23:54:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-25 23:54:23,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:23,859 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:23,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 23:54:23,860 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 282484226, now seen corresponding path program 1 times [2022-11-25 23:54:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:23,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360511372] [2022-11-25 23:54:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-25 23:54:24,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:24,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360511372] [2022-11-25 23:54:24,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360511372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:24,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:24,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:54:24,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966272730] [2022-11-25 23:54:24,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:24,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:54:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:24,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:54:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:54:24,676 INFO L87 Difference]: Start difference. First operand 1702 states and 2182 transitions. Second operand has 11 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 23:54:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:32,081 INFO L93 Difference]: Finished difference Result 4237 states and 5734 transitions. [2022-11-25 23:54:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:54:32,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 136 [2022-11-25 23:54:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:32,096 INFO L225 Difference]: With dead ends: 4237 [2022-11-25 23:54:32,096 INFO L226 Difference]: Without dead ends: 2555 [2022-11-25 23:54:32,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:54:32,105 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 584 mSDsluCounter, 11436 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 12845 SdHoareTripleChecker+Invalid, 3148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:32,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 12845 Invalid, 3148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [690 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-25 23:54:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2022-11-25 23:54:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1721. [2022-11-25 23:54:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 994 states have (on average 1.1911468812877264) internal successors, (1184), 1048 states have internal predecessors, (1184), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-25 23:54:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2214 transitions. [2022-11-25 23:54:32,509 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2214 transitions. Word has length 136 [2022-11-25 23:54:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:32,509 INFO L495 AbstractCegarLoop]: Abstraction has 1721 states and 2214 transitions. [2022-11-25 23:54:32,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 23:54:32,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2214 transitions. [2022-11-25 23:54:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:54:32,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:32,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:32,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 23:54:32,513 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2113001866, now seen corresponding path program 1 times [2022-11-25 23:54:32,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:32,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640388661] [2022-11-25 23:54:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:32,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:32,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:32,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640388661] [2022-11-25 23:54:32,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640388661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:32,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:32,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:32,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315464372] [2022-11-25 23:54:32,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:32,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:32,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:32,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:32,737 INFO L87 Difference]: Start difference. First operand 1721 states and 2214 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-25 23:54:34,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:34,042 INFO L93 Difference]: Finished difference Result 1721 states and 2214 transitions. [2022-11-25 23:54:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:34,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 115 [2022-11-25 23:54:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:34,047 INFO L225 Difference]: With dead ends: 1721 [2022-11-25 23:54:34,047 INFO L226 Difference]: Without dead ends: 1719 [2022-11-25 23:54:34,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:34,048 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 993 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:34,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1722 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:54:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-11-25 23:54:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2022-11-25 23:54:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 993 states have (on average 1.18932527693857) internal successors, (1181), 1046 states have internal predecessors, (1181), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-25 23:54:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2211 transitions. [2022-11-25 23:54:34,414 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2211 transitions. Word has length 115 [2022-11-25 23:54:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:34,415 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2211 transitions. [2022-11-25 23:54:34,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-25 23:54:34,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2211 transitions. [2022-11-25 23:54:34,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-25 23:54:34,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:34,419 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:34,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 23:54:34,419 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1924094184, now seen corresponding path program 1 times [2022-11-25 23:54:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:34,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055616404] [2022-11-25 23:54:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:34,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:34,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055616404] [2022-11-25 23:54:34,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055616404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:34,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:34,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:34,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113183015] [2022-11-25 23:54:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:34,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:34,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:34,626 INFO L87 Difference]: Start difference. First operand 1719 states and 2211 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 23:54:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:36,020 INFO L93 Difference]: Finished difference Result 1719 states and 2211 transitions. [2022-11-25 23:54:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:36,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 120 [2022-11-25 23:54:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:36,027 INFO L225 Difference]: With dead ends: 1719 [2022-11-25 23:54:36,027 INFO L226 Difference]: Without dead ends: 1717 [2022-11-25 23:54:36,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:36,030 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 990 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:36,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 1718 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:54:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-11-25 23:54:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1717. [2022-11-25 23:54:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 992 states have (on average 1.1875) internal successors, (1178), 1044 states have internal predecessors, (1178), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-25 23:54:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2208 transitions. [2022-11-25 23:54:36,329 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2208 transitions. Word has length 120 [2022-11-25 23:54:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:36,329 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2208 transitions. [2022-11-25 23:54:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-25 23:54:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2208 transitions. [2022-11-25 23:54:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-25 23:54:36,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:36,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 23:54:36,334 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash -736849666, now seen corresponding path program 1 times [2022-11-25 23:54:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:36,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661198538] [2022-11-25 23:54:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:36,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:36,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661198538] [2022-11-25 23:54:36,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661198538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:36,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:36,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:36,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223430181] [2022-11-25 23:54:36,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:36,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:36,562 INFO L87 Difference]: Start difference. First operand 1717 states and 2208 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:54:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:37,939 INFO L93 Difference]: Finished difference Result 1717 states and 2208 transitions. [2022-11-25 23:54:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 125 [2022-11-25 23:54:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:37,945 INFO L225 Difference]: With dead ends: 1717 [2022-11-25 23:54:37,945 INFO L226 Difference]: Without dead ends: 1715 [2022-11-25 23:54:37,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:37,946 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 987 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:37,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1714 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:54:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-11-25 23:54:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1715. [2022-11-25 23:54:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 991 states have (on average 1.1856710393541876) internal successors, (1175), 1042 states have internal predecessors, (1175), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-25 23:54:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2205 transitions. [2022-11-25 23:54:38,403 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2205 transitions. Word has length 125 [2022-11-25 23:54:38,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:38,403 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2205 transitions. [2022-11-25 23:54:38,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:54:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2205 transitions. [2022-11-25 23:54:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-25 23:54:38,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:38,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:38,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 23:54:38,408 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash -776639370, now seen corresponding path program 1 times [2022-11-25 23:54:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:38,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097350079] [2022-11-25 23:54:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:38,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:38,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:38,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097350079] [2022-11-25 23:54:38,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097350079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:38,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:38,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762733827] [2022-11-25 23:54:38,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:38,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:38,668 INFO L87 Difference]: Start difference. First operand 1715 states and 2205 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-25 23:54:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:40,101 INFO L93 Difference]: Finished difference Result 1715 states and 2205 transitions. [2022-11-25 23:54:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 130 [2022-11-25 23:54:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:40,108 INFO L225 Difference]: With dead ends: 1715 [2022-11-25 23:54:40,108 INFO L226 Difference]: Without dead ends: 1713 [2022-11-25 23:54:40,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:40,109 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 984 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:40,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1710 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 23:54:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2022-11-25 23:54:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2022-11-25 23:54:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 990 states have (on average 1.183838383838384) internal successors, (1172), 1040 states have internal predecessors, (1172), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-25 23:54:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2202 transitions. [2022-11-25 23:54:40,585 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2202 transitions. Word has length 130 [2022-11-25 23:54:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:40,586 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2202 transitions. [2022-11-25 23:54:40,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-25 23:54:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2202 transitions. [2022-11-25 23:54:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 23:54:40,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:40,590 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:40,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 23:54:40,590 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1668146862, now seen corresponding path program 1 times [2022-11-25 23:54:40,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:40,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515805524] [2022-11-25 23:54:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-25 23:54:41,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:41,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515805524] [2022-11-25 23:54:41,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515805524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:54:41,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730616379] [2022-11-25 23:54:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:41,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:41,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:41,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:41,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:54:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:42,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 23:54:42,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-25 23:54:42,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:54:42,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730616379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:42,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:54:42,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 14 [2022-11-25 23:54:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658134613] [2022-11-25 23:54:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:42,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:54:42,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:54:42,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:54:42,838 INFO L87 Difference]: Start difference. First operand 1713 states and 2202 transitions. Second operand has 11 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-25 23:54:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:47,736 INFO L93 Difference]: Finished difference Result 2250 states and 2843 transitions. [2022-11-25 23:54:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:54:47,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 157 [2022-11-25 23:54:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:47,751 INFO L225 Difference]: With dead ends: 2250 [2022-11-25 23:54:47,751 INFO L226 Difference]: Without dead ends: 1746 [2022-11-25 23:54:47,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:54:47,754 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 24 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8457 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:47,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8457 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 23:54:47,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2022-11-25 23:54:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1722. [2022-11-25 23:54:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 995 states have (on average 1.1829145728643216) internal successors, (1177), 1045 states have internal predecessors, (1177), 511 states have call successors, (511), 206 states have call predecessors, (511), 205 states have return successors, (527), 501 states have call predecessors, (527), 509 states have call successors, (527) [2022-11-25 23:54:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2215 transitions. [2022-11-25 23:54:48,184 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2215 transitions. Word has length 157 [2022-11-25 23:54:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:48,184 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2215 transitions. [2022-11-25 23:54:48,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-25 23:54:48,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2215 transitions. [2022-11-25 23:54:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 23:54:48,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:48,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:48,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:54:48,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 23:54:48,398 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:48,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1663659430, now seen corresponding path program 1 times [2022-11-25 23:54:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:48,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971482410] [2022-11-25 23:54:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:54:48,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971482410] [2022-11-25 23:54:48,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971482410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:48,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:48,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:54:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689504568] [2022-11-25 23:54:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:54:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:48,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:54:48,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:54:48,623 INFO L87 Difference]: Start difference. First operand 1722 states and 2215 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:54:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:50,481 INFO L93 Difference]: Finished difference Result 1722 states and 2215 transitions. [2022-11-25 23:54:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:54:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 135 [2022-11-25 23:54:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:50,489 INFO L225 Difference]: With dead ends: 1722 [2022-11-25 23:54:50,490 INFO L226 Difference]: Without dead ends: 1504 [2022-11-25 23:54:50,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:50,492 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 981 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:50,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1708 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 23:54:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-11-25 23:54:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1504. [2022-11-25 23:54:50,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 876 states have (on average 1.2009132420091324) internal successors, (1052), 922 states have internal predecessors, (1052), 449 states have call successors, (449), 171 states have call predecessors, (449), 169 states have return successors, (464), 441 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-25 23:54:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1965 transitions. [2022-11-25 23:54:50,918 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1965 transitions. Word has length 135 [2022-11-25 23:54:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:50,918 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 1965 transitions. [2022-11-25 23:54:50,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 23:54:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1965 transitions. [2022-11-25 23:54:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-25 23:54:50,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:50,922 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 23:54:50,923 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash -745740765, now seen corresponding path program 1 times [2022-11-25 23:54:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765914914] [2022-11-25 23:54:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-25 23:54:51,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:51,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765914914] [2022-11-25 23:54:51,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765914914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:54:51,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674233838] [2022-11-25 23:54:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:51,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:51,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:54:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:52,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 23:54:52,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-25 23:54:52,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:54:52,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674233838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:52,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:54:52,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 14 [2022-11-25 23:54:52,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396637441] [2022-11-25 23:54:52,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:52,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:54:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:52,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:54:52,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:54:52,777 INFO L87 Difference]: Start difference. First operand 1504 states and 1965 transitions. Second operand has 12 states, 9 states have (on average 6.333333333333333) internal successors, (57), 11 states have internal predecessors, (57), 7 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-25 23:54:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:57,052 INFO L93 Difference]: Finished difference Result 1830 states and 2373 transitions. [2022-11-25 23:54:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:54:57,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.333333333333333) internal successors, (57), 11 states have internal predecessors, (57), 7 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) Word has length 162 [2022-11-25 23:54:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:57,059 INFO L225 Difference]: With dead ends: 1830 [2022-11-25 23:54:57,060 INFO L226 Difference]: Without dead ends: 1504 [2022-11-25 23:54:57,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:54:57,063 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 21 mSDsluCounter, 7292 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8029 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:57,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8029 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 23:54:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-11-25 23:54:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1504. [2022-11-25 23:54:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 876 states have (on average 1.1997716894977168) internal successors, (1051), 921 states have internal predecessors, (1051), 449 states have call successors, (449), 171 states have call predecessors, (449), 169 states have return successors, (464), 441 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-25 23:54:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1964 transitions. [2022-11-25 23:54:57,352 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1964 transitions. Word has length 162 [2022-11-25 23:54:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:57,352 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 1964 transitions. [2022-11-25 23:54:57,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.333333333333333) internal successors, (57), 11 states have internal predecessors, (57), 7 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-25 23:54:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1964 transitions. [2022-11-25 23:54:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-25 23:54:57,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:57,356 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:57,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:54:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-25 23:54:57,566 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:54:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1552640051, now seen corresponding path program 1 times [2022-11-25 23:54:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:57,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137484074] [2022-11-25 23:54:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-11-25 23:54:58,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:58,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137484074] [2022-11-25 23:54:58,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137484074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:58,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:58,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:54:58,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719439585] [2022-11-25 23:54:58,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:58,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:54:58,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:54:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:54:58,334 INFO L87 Difference]: Start difference. First operand 1504 states and 1964 transitions. Second operand has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-25 23:55:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:00,824 INFO L93 Difference]: Finished difference Result 2104 states and 2705 transitions. [2022-11-25 23:55:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:55:00,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 170 [2022-11-25 23:55:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:00,832 INFO L225 Difference]: With dead ends: 2104 [2022-11-25 23:55:00,832 INFO L226 Difference]: Without dead ends: 1516 [2022-11-25 23:55:00,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:55:00,836 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:00,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4363 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 23:55:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-11-25 23:55:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1512. [2022-11-25 23:55:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 880 states have (on average 1.1988636363636365) internal successors, (1055), 929 states have internal predecessors, (1055), 449 states have call successors, (449), 171 states have call predecessors, (449), 173 states have return successors, (475), 441 states have call predecessors, (475), 446 states have call successors, (475) [2022-11-25 23:55:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1979 transitions. [2022-11-25 23:55:01,312 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1979 transitions. Word has length 170 [2022-11-25 23:55:01,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:01,313 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 1979 transitions. [2022-11-25 23:55:01,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-25 23:55:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1979 transitions. [2022-11-25 23:55:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-25 23:55:01,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:01,316 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:01,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 23:55:01,317 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:01,318 INFO L85 PathProgramCache]: Analyzing trace with hash -770122110, now seen corresponding path program 1 times [2022-11-25 23:55:01,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:01,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550805561] [2022-11-25 23:55:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:01,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-25 23:55:02,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:02,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550805561] [2022-11-25 23:55:02,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550805561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:02,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183452405] [2022-11-25 23:55:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:02,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:02,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:02,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:55:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:03,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 23:55:03,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-25 23:55:03,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:55:03,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183452405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:03,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:55:03,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2022-11-25 23:55:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999151851] [2022-11-25 23:55:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:03,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:55:03,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:55:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:55:03,112 INFO L87 Difference]: Start difference. First operand 1512 states and 1979 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-25 23:55:06,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:06,413 INFO L93 Difference]: Finished difference Result 2189 states and 2941 transitions. [2022-11-25 23:55:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:55:06,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 183 [2022-11-25 23:55:06,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:06,419 INFO L225 Difference]: With dead ends: 2189 [2022-11-25 23:55:06,419 INFO L226 Difference]: Without dead ends: 1853 [2022-11-25 23:55:06,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:55:06,422 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 218 mSDsluCounter, 3947 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 4761 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:06,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 4761 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 23:55:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2022-11-25 23:55:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1514. [2022-11-25 23:55:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 882 states have (on average 1.1984126984126984) internal successors, (1057), 931 states have internal predecessors, (1057), 449 states have call successors, (449), 171 states have call predecessors, (449), 173 states have return successors, (475), 441 states have call predecessors, (475), 446 states have call successors, (475) [2022-11-25 23:55:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1981 transitions. [2022-11-25 23:55:06,858 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1981 transitions. Word has length 183 [2022-11-25 23:55:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:06,858 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 1981 transitions. [2022-11-25 23:55:06,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-25 23:55:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1981 transitions. [2022-11-25 23:55:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 23:55:06,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:06,861 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:06,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:55:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-25 23:55:07,072 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 18538414, now seen corresponding path program 1 times [2022-11-25 23:55:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:07,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310709272] [2022-11-25 23:55:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:07,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-25 23:55:08,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:08,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310709272] [2022-11-25 23:55:08,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310709272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:08,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353919499] [2022-11-25 23:55:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:08,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:08,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:08,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:55:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:09,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-25 23:55:09,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-25 23:55:09,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:55:09,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353919499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:09,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:55:09,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 16 [2022-11-25 23:55:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309307944] [2022-11-25 23:55:09,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:09,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:55:09,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:55:09,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:55:09,409 INFO L87 Difference]: Start difference. First operand 1514 states and 1981 transitions. Second operand has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-25 23:55:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:13,978 INFO L93 Difference]: Finished difference Result 2180 states and 2817 transitions. [2022-11-25 23:55:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:55:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 190 [2022-11-25 23:55:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:13,983 INFO L225 Difference]: With dead ends: 2180 [2022-11-25 23:55:13,984 INFO L226 Difference]: Without dead ends: 1518 [2022-11-25 23:55:13,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:55:13,996 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 32 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8046 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:13,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 8046 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 23:55:14,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2022-11-25 23:55:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1512. [2022-11-25 23:55:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 881 states have (on average 1.1963677639046537) internal successors, (1054), 930 states have internal predecessors, (1054), 450 states have call successors, (450), 169 states have call predecessors, (450), 171 states have return successors, (476), 442 states have call predecessors, (476), 447 states have call successors, (476) [2022-11-25 23:55:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1980 transitions. [2022-11-25 23:55:14,314 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1980 transitions. Word has length 190 [2022-11-25 23:55:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:14,314 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 1980 transitions. [2022-11-25 23:55:14,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-25 23:55:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1980 transitions. [2022-11-25 23:55:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-25 23:55:14,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:14,317 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:14,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 23:55:14,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-25 23:55:14,526 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1966981529, now seen corresponding path program 1 times [2022-11-25 23:55:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:14,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16940461] [2022-11-25 23:55:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:14,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 23:55:14,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:14,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16940461] [2022-11-25 23:55:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16940461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:14,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:14,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:55:14,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795724233] [2022-11-25 23:55:14,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:14,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:55:14,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:55:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:55:14,911 INFO L87 Difference]: Start difference. First operand 1512 states and 1980 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:55:17,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:17,582 INFO L93 Difference]: Finished difference Result 1966 states and 2680 transitions. [2022-11-25 23:55:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:55:17,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 202 [2022-11-25 23:55:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:17,591 INFO L225 Difference]: With dead ends: 1966 [2022-11-25 23:55:17,591 INFO L226 Difference]: Without dead ends: 1964 [2022-11-25 23:55:17,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:55:17,594 INFO L413 NwaCegarLoop]: 1381 mSDtfsCounter, 978 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:17,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 3236 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 23:55:17,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-11-25 23:55:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1514. [2022-11-25 23:55:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 883 states have (on average 1.1959229898074746) internal successors, (1056), 931 states have internal predecessors, (1056), 450 states have call successors, (450), 169 states have call predecessors, (450), 171 states have return successors, (476), 443 states have call predecessors, (476), 447 states have call successors, (476) [2022-11-25 23:55:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1982 transitions. [2022-11-25 23:55:18,070 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1982 transitions. Word has length 202 [2022-11-25 23:55:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:18,071 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 1982 transitions. [2022-11-25 23:55:18,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:55:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1982 transitions. [2022-11-25 23:55:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-25 23:55:18,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:18,074 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:18,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 23:55:18,074 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1647028617, now seen corresponding path program 1 times [2022-11-25 23:55:18,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:18,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671120710] [2022-11-25 23:55:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:18,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 23:55:18,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:18,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671120710] [2022-11-25 23:55:18,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671120710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:18,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:18,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:55:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178501886] [2022-11-25 23:55:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:18,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:55:18,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:55:18,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:55:18,459 INFO L87 Difference]: Start difference. First operand 1514 states and 1982 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:55:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:21,135 INFO L93 Difference]: Finished difference Result 3392 states and 4546 transitions. [2022-11-25 23:55:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:55:21,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 213 [2022-11-25 23:55:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:21,140 INFO L225 Difference]: With dead ends: 3392 [2022-11-25 23:55:21,140 INFO L226 Difference]: Without dead ends: 1898 [2022-11-25 23:55:21,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:55:21,144 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 108 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:21,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 4360 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 23:55:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2022-11-25 23:55:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1522. [2022-11-25 23:55:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 889 states have (on average 1.1946006749156355) internal successors, (1062), 937 states have internal predecessors, (1062), 450 states have call successors, (450), 169 states have call predecessors, (450), 173 states have return successors, (480), 445 states have call predecessors, (480), 447 states have call successors, (480) [2022-11-25 23:55:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1992 transitions. [2022-11-25 23:55:21,491 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1992 transitions. Word has length 213 [2022-11-25 23:55:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:21,491 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1992 transitions. [2022-11-25 23:55:21,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 23:55:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1992 transitions. [2022-11-25 23:55:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-25 23:55:21,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:21,495 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:21,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 23:55:21,495 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:21,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1301938378, now seen corresponding path program 1 times [2022-11-25 23:55:21,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:21,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868219644] [2022-11-25 23:55:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-25 23:55:22,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868219644] [2022-11-25 23:55:22,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868219644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190340498] [2022-11-25 23:55:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:22,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:22,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:22,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:55:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:23,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 23:55:23,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-11-25 23:55:23,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:55:23,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190340498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:23,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:55:23,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2022-11-25 23:55:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68828758] [2022-11-25 23:55:23,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:55:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:55:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:55:23,501 INFO L87 Difference]: Start difference. First operand 1522 states and 1992 transitions. Second operand has 14 states, 10 states have (on average 8.0) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-25 23:55:31,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:31,799 INFO L93 Difference]: Finished difference Result 3800 states and 5177 transitions. [2022-11-25 23:55:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 23:55:31,799 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 8.0) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) Word has length 226 [2022-11-25 23:55:31,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:31,806 INFO L225 Difference]: With dead ends: 3800 [2022-11-25 23:55:31,807 INFO L226 Difference]: Without dead ends: 2296 [2022-11-25 23:55:31,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2022-11-25 23:55:31,812 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 550 mSDsluCounter, 13033 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 14207 SdHoareTripleChecker+Invalid, 3550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:31,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 14207 Invalid, 3550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [451 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-25 23:55:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-11-25 23:55:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1522. [2022-11-25 23:55:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 889 states have (on average 1.1946006749156355) internal successors, (1062), 937 states have internal predecessors, (1062), 450 states have call successors, (450), 169 states have call predecessors, (450), 173 states have return successors, (480), 445 states have call predecessors, (480), 447 states have call successors, (480) [2022-11-25 23:55:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1992 transitions. [2022-11-25 23:55:32,134 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1992 transitions. Word has length 226 [2022-11-25 23:55:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:32,135 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1992 transitions. [2022-11-25 23:55:32,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 8.0) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-25 23:55:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1992 transitions. [2022-11-25 23:55:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-25 23:55:32,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:32,138 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:32,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:55:32,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:32,348 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:32,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash -110188336, now seen corresponding path program 1 times [2022-11-25 23:55:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:32,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189874385] [2022-11-25 23:55:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-25 23:55:32,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189874385] [2022-11-25 23:55:32,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189874385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:32,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:32,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:55:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545197642] [2022-11-25 23:55:32,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:32,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:55:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:55:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:55:32,638 INFO L87 Difference]: Start difference. First operand 1522 states and 1992 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-25 23:55:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:34,255 INFO L93 Difference]: Finished difference Result 3092 states and 4075 transitions. [2022-11-25 23:55:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:55:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 244 [2022-11-25 23:55:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:34,260 INFO L225 Difference]: With dead ends: 3092 [2022-11-25 23:55:34,261 INFO L226 Difference]: Without dead ends: 1590 [2022-11-25 23:55:34,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:55:34,264 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 42 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:34,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2249 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:55:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-11-25 23:55:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1554. [2022-11-25 23:55:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 909 states have (on average 1.199119911991199) internal successors, (1090), 961 states have internal predecessors, (1090), 462 states have call successors, (462), 169 states have call predecessors, (462), 173 states have return successors, (492), 457 states have call predecessors, (492), 459 states have call successors, (492) [2022-11-25 23:55:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2044 transitions. [2022-11-25 23:55:34,555 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2044 transitions. Word has length 244 [2022-11-25 23:55:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:34,555 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2044 transitions. [2022-11-25 23:55:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-25 23:55:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2044 transitions. [2022-11-25 23:55:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-25 23:55:34,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:34,559 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:34,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-25 23:55:34,559 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash -776923253, now seen corresponding path program 1 times [2022-11-25 23:55:34,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:34,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647114462] [2022-11-25 23:55:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-25 23:55:34,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:34,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647114462] [2022-11-25 23:55:34,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647114462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:34,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:34,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:55:34,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605014516] [2022-11-25 23:55:34,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:55:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:34,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:55:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:55:34,957 INFO L87 Difference]: Start difference. First operand 1554 states and 2044 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-25 23:55:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:37,516 INFO L93 Difference]: Finished difference Result 3504 states and 4732 transitions. [2022-11-25 23:55:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:55:37,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 248 [2022-11-25 23:55:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:37,522 INFO L225 Difference]: With dead ends: 3504 [2022-11-25 23:55:37,522 INFO L226 Difference]: Without dead ends: 1970 [2022-11-25 23:55:37,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:55:37,526 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 147 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 5309 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:37,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 5309 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 23:55:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-11-25 23:55:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1566. [2022-11-25 23:55:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 917 states have (on average 1.1973827699018538) internal successors, (1098), 969 states have internal predecessors, (1098), 464 states have call successors, (464), 169 states have call predecessors, (464), 175 states have return successors, (498), 461 states have call predecessors, (498), 461 states have call successors, (498) [2022-11-25 23:55:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2060 transitions. [2022-11-25 23:55:37,871 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2060 transitions. Word has length 248 [2022-11-25 23:55:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:37,872 INFO L495 AbstractCegarLoop]: Abstraction has 1566 states and 2060 transitions. [2022-11-25 23:55:37,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-25 23:55:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2060 transitions. [2022-11-25 23:55:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-25 23:55:37,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:37,883 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:37,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-25 23:55:37,883 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash 244508168, now seen corresponding path program 1 times [2022-11-25 23:55:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:37,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99039032] [2022-11-25 23:55:37,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:37,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-25 23:55:38,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:38,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99039032] [2022-11-25 23:55:38,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99039032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:38,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418908569] [2022-11-25 23:55:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:38,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:38,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:38,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:38,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:55:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:39,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 23:55:39,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-25 23:55:39,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:55:39,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418908569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:39,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:55:39,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 21 [2022-11-25 23:55:39,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312010681] [2022-11-25 23:55:39,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:39,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 23:55:39,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:39,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 23:55:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:55:39,987 INFO L87 Difference]: Start difference. First operand 1566 states and 2060 transitions. Second operand has 15 states, 11 states have (on average 7.636363636363637) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-25 23:55:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:49,239 INFO L93 Difference]: Finished difference Result 3920 states and 5373 transitions. [2022-11-25 23:55:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 23:55:49,240 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 7.636363636363637) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 261 [2022-11-25 23:55:49,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:49,246 INFO L225 Difference]: With dead ends: 3920 [2022-11-25 23:55:49,246 INFO L226 Difference]: Without dead ends: 2372 [2022-11-25 23:55:49,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 23:55:49,251 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 589 mSDsluCounter, 14339 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 15525 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:49,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 15525 Invalid, 3832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [466 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-25 23:55:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-11-25 23:55:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1558. [2022-11-25 23:55:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 911 states have (on average 1.198682766190999) internal successors, (1092), 963 states have internal predecessors, (1092), 464 states have call successors, (464), 169 states have call predecessors, (464), 173 states have return successors, (494), 459 states have call predecessors, (494), 461 states have call successors, (494) [2022-11-25 23:55:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2050 transitions. [2022-11-25 23:55:49,606 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2050 transitions. Word has length 261 [2022-11-25 23:55:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:49,606 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2050 transitions. [2022-11-25 23:55:49,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 7.636363636363637) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-25 23:55:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2050 transitions. [2022-11-25 23:55:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-25 23:55:49,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:49,610 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:49,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:55:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-25 23:55:49,824 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1025093937, now seen corresponding path program 1 times [2022-11-25 23:55:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:49,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235696088] [2022-11-25 23:55:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:49,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-25 23:55:50,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235696088] [2022-11-25 23:55:50,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235696088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005221770] [2022-11-25 23:55:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:50,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:50,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:50,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:50,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:55:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:52,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:55:52,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-11-25 23:55:52,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:55:52,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005221770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:52,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:55:52,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-11-25 23:55:52,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714621273] [2022-11-25 23:55:52,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:52,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:52,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:52,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:55:52,485 INFO L87 Difference]: Start difference. First operand 1558 states and 2050 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-25 23:55:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:54,307 INFO L93 Difference]: Finished difference Result 4505 states and 5897 transitions. [2022-11-25 23:55:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:54,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 261 [2022-11-25 23:55:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:54,313 INFO L225 Difference]: With dead ends: 4505 [2022-11-25 23:55:54,313 INFO L226 Difference]: Without dead ends: 2967 [2022-11-25 23:55:54,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:55:54,317 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 601 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:54,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1646 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:55:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2022-11-25 23:55:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2893. [2022-11-25 23:55:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 1685 states have (on average 1.200593471810089) internal successors, (2023), 1778 states have internal predecessors, (2023), 864 states have call successors, (864), 324 states have call predecessors, (864), 334 states have return successors, (921), 856 states have call predecessors, (921), 861 states have call successors, (921) [2022-11-25 23:55:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 3808 transitions. [2022-11-25 23:55:55,146 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 3808 transitions. Word has length 261 [2022-11-25 23:55:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:55,146 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 3808 transitions. [2022-11-25 23:55:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-25 23:55:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 3808 transitions. [2022-11-25 23:55:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-25 23:55:55,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:55,150 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:55,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:55:55,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-25 23:55:55,361 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:55:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1911627918, now seen corresponding path program 1 times [2022-11-25 23:55:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:55,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659006463] [2022-11-25 23:55:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-25 23:55:56,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:56,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659006463] [2022-11-25 23:55:56,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659006463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:55:56,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555884553] [2022-11-25 23:55:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:56,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:55:56,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:55:56,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:55:56,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:55:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:57,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 23:55:57,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:55:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-25 23:55:57,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:55:57,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555884553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:57,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:55:57,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2022-11-25 23:55:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867112623] [2022-11-25 23:55:57,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:57,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:55:57,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:55:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:55:57,617 INFO L87 Difference]: Start difference. First operand 2893 states and 3808 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 23:56:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:01,382 INFO L93 Difference]: Finished difference Result 6324 states and 8501 transitions. [2022-11-25 23:56:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:56:01,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) Word has length 266 [2022-11-25 23:56:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:01,397 INFO L225 Difference]: With dead ends: 6324 [2022-11-25 23:56:01,398 INFO L226 Difference]: Without dead ends: 3451 [2022-11-25 23:56:01,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:56:01,409 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 68 mSDsluCounter, 5229 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 6123 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:01,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 6123 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 23:56:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2022-11-25 23:56:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 2917. [2022-11-25 23:56:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 1701 states have (on average 1.1987066431510875) internal successors, (2039), 1790 states have internal predecessors, (2039), 868 states have call successors, (868), 324 states have call predecessors, (868), 338 states have return successors, (961), 868 states have call predecessors, (961), 865 states have call successors, (961) [2022-11-25 23:56:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3868 transitions. [2022-11-25 23:56:02,059 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3868 transitions. Word has length 266 [2022-11-25 23:56:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:02,060 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3868 transitions. [2022-11-25 23:56:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 23:56:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3868 transitions. [2022-11-25 23:56:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-25 23:56:02,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:02,063 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:56:02,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:02,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-25 23:56:02,276 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-25 23:56:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1020129715, now seen corresponding path program 1 times [2022-11-25 23:56:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:02,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50507568] [2022-11-25 23:56:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2022-11-25 23:56:04,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:04,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50507568] [2022-11-25 23:56:04,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50507568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:04,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773985244] [2022-11-25 23:56:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:04,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:04,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:04,223 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:04,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20ba565-8805-4112-978f-2946d67fce7c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 23:56:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:05,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2184 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 23:56:05,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-25 23:56:05,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-11-25 23:56:06,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773985244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:06,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1030746662] [2022-11-25 23:56:06,276 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-25 23:56:06,277 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:06,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:06,286 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:06,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:07,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 23:56:08,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 23:56:12,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:13,151 INFO L321 Elim1Store]: treesize reduction 576, result has 33.4 percent of original size [2022-11-25 23:56:13,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 563 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 64 case distinctions, treesize of input 182 treesize of output 409 [2022-11-25 23:56:13,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:13,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 33 select indices, 33 select index equivalence classes, 562 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 270 [2022-11-25 23:56:31,379 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 23:56:31,385 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 23:56:33,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:33,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 562 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-25 23:56:33,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:33,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-25 23:56:36,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-25 23:56:36,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 562 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-25 23:56:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:44,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:44,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:44,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:44,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:44,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:44,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:45,581 INFO L321 Elim1Store]: treesize reduction 96, result has 48.1 percent of original size [2022-11-25 23:56:45,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 67 select indices, 67 select index equivalence classes, 442 disjoint index pairs (out of 2211 index pairs), introduced 67 new quantified variables, introduced 8 case distinctions, treesize of input 5223 treesize of output 5066 [2022-11-25 23:56:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:46,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:46,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:46,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:46,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:46,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:47,107 INFO L321 Elim1Store]: treesize reduction 124, result has 33.0 percent of original size [2022-11-25 23:56:47,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 67 select indices, 67 select index equivalence classes, 442 disjoint index pairs (out of 2211 index pairs), introduced 67 new quantified variables, introduced 8 case distinctions, treesize of input 5159 treesize of output 4974 [2022-11-25 23:56:48,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,240 INFO L217 Elim1Store]: Index analysis took 144 ms [2022-11-25 23:56:48,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:48,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:48,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:48,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:48,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:48,546 INFO L321 Elim1Store]: treesize reduction 160, result has 41.0 percent of original size [2022-11-25 23:56:48,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 99 select indices, 99 select index equivalence classes, 412 disjoint index pairs (out of 4851 index pairs), introduced 99 new quantified variables, introduced 10 case distinctions, treesize of input 5155 treesize of output 4963 [2022-11-25 23:59:51,205 WARN L233 SmtUtils]: Spent 9.03s on a formula simplification that was a NOOP. DAG size: 1192 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 00:02:25,227 WARN L233 SmtUtils]: Spent 11.34s on a formula simplification that was a NOOP. DAG size: 1213 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 00:06:55,912 WARN L233 SmtUtils]: Spent 20.07s on a formula simplification that was a NOOP. DAG size: 1294 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 00:07:15,923 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification that was a NOOP. DAG size: 1286 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)