./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:47:19,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:47:19,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:47:19,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:47:19,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:47:19,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:47:19,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:47:19,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:47:19,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:47:19,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:47:19,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:47:19,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:47:19,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:47:19,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:47:19,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:47:19,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:47:19,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:47:19,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:47:19,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:47:19,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:47:19,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:47:19,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:47:19,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:47:19,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:47:19,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:47:19,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:47:19,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:47:19,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:47:19,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:47:19,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:47:19,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:47:19,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:47:19,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:47:19,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:47:19,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:47:19,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:47:19,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:47:19,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:47:19,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:47:19,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:47:19,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:47:19,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:47:19,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:47:19,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:47:19,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:47:19,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:47:19,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:47:19,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:47:19,705 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:47:19,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:47:19,705 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:47:19,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:47:19,705 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:47:19,710 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:47:19,711 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:47:19,711 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:47:19,711 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:47:19,711 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:47:19,711 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:47:19,711 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:47:19,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:47:19,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:47:19,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:47:19,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:47:19,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:47:19,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:47:19,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:47:19,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:47:19,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:47:19,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:47:19,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:47:19,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:47:19,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:47:19,714 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:47:19,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:47:19,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:47:19,714 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:47:19,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:47:19,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:47:19,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:47:19,715 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_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 [2022-12-14 04:47:19,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:47:19,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:47:19,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:47:19,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:47:19,902 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:47:19,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-12-14 04:47:22,498 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:47:22,821 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:47:22,821 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-12-14 04:47:22,842 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/data/66d599fd4/ffea1d0db6824deda829da4a7e57a037/FLAGaaba548fa [2022-12-14 04:47:23,068 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/data/66d599fd4/ffea1d0db6824deda829da4a7e57a037 [2022-12-14 04:47:23,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:47:23,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:47:23,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:47:23,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:47:23,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:47:23,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:47:23" (1/1) ... [2022-12-14 04:47:23,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1d9e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:23, skipping insertion in model container [2022-12-14 04:47:23,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:47:23" (1/1) ... [2022-12-14 04:47:23,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:47:23,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:47:23,602 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 04:47:23,693 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 04:47:23,704 WARN L623 FunctionHandler]: Unknown extern function devm_kmalloc [2022-12-14 04:47:23,767 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-14 04:47:23,772 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 04:47:23,774 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-14 04:47:23,804 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 04:47:23,805 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 04:47:23,813 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 04:47:23,813 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:23,869 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 04:47:23,933 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-12-14 04:47:23,954 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-12-14 04:47:23,992 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 04:47:23,992 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-12-14 04:47:23,998 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-12-14 04:47:23,998 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,034 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-12-14 04:47:24,035 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,039 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,040 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-12-14 04:47:24,047 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-14 04:47:24,056 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:47:24,056 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,062 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 04:47:24,069 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,069 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:24,070 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:47:24,070 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,077 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:47:24,081 WARN L623 FunctionHandler]: Unknown extern function regulator_enable [2022-12-14 04:47:24,081 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-12-14 04:47:24,085 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-14 04:47:24,088 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-14 04:47:24,089 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-12-14 04:47:24,089 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,090 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,090 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,093 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-12-14 04:47:24,094 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-12-14 04:47:24,094 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 04:47:24,098 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,100 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-12-14 04:47:24,100 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,104 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,104 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:24,105 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-12-14 04:47:24,106 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,110 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,115 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-12-14 04:47:24,116 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,116 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-12-14 04:47:24,116 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,120 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-12-14 04:47:24,121 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,121 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,122 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,123 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-14 04:47:24,123 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-12-14 04:47:24,124 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 04:47:24,124 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 04:47:24,124 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 04:47:24,125 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 04:47:24,125 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,126 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,133 WARN L623 FunctionHandler]: Unknown extern function devm_clk_get [2022-12-14 04:47:24,134 WARN L623 FunctionHandler]: Unknown extern function clk_get_rate [2022-12-14 04:47:24,134 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-12-14 04:47:24,136 WARN L623 FunctionHandler]: Unknown extern function spi_get_device_id [2022-12-14 04:47:24,137 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-12-14 04:47:24,137 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-12-14 04:47:24,138 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 04:47:24,141 WARN L623 FunctionHandler]: Unknown extern function spi_setup [2022-12-14 04:47:24,142 WARN L623 FunctionHandler]: Unknown extern function devm_can_led_init [2022-12-14 04:47:24,142 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 04:47:24,143 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-14 04:47:24,147 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-14 04:47:24,151 WARN L623 FunctionHandler]: Unknown extern function disable_irq [2022-12-14 04:47:24,152 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-14 04:47:24,152 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-12-14 04:47:24,157 WARN L623 FunctionHandler]: Unknown extern function enable_irq [2022-12-14 04:47:24,387 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 04:47:24,390 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 04:47:24,390 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 04:47:24,413 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 04:47:24,432 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 04:47:24,440 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 04:47:24,441 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 04:47:24,442 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 04:47:24,470 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-12-14 04:47:24,471 WARN L623 FunctionHandler]: Unknown extern function unregister_candev [2022-12-14 04:47:24,472 WARN L623 FunctionHandler]: Unknown extern function spi_register_driver [2022-12-14 04:47:24,505 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 04:47:24,505 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 04:47:24,511 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 04:47:24,577 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_da6df535-cea1-4e46-a720-3b4a2d361445/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-12-14 04:47:24,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:47:24,621 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:47:24,684 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 04:47:24,687 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 04:47:24,687 WARN L623 FunctionHandler]: Unknown extern function devm_kmalloc [2022-12-14 04:47:24,692 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-14 04:47:24,693 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 04:47:24,694 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-14 04:47:24,695 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 04:47:24,696 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 04:47:24,696 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 04:47:24,697 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:24,699 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 04:47:24,701 WARN L623 FunctionHandler]: Unknown extern function driver_unregister [2022-12-14 04:47:24,703 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-12-14 04:47:24,705 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 04:47:24,705 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-12-14 04:47:24,707 WARN L623 FunctionHandler]: Unknown extern function spi_sync [2022-12-14 04:47:24,707 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,715 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-12-14 04:47:24,716 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,718 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,719 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-12-14 04:47:24,721 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-14 04:47:24,722 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:47:24,723 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,725 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 04:47:24,726 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,726 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:24,727 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 04:47:24,727 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,729 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 04:47:24,730 WARN L623 FunctionHandler]: Unknown extern function regulator_enable [2022-12-14 04:47:24,730 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-12-14 04:47:24,731 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-14 04:47:24,731 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-14 04:47:24,732 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-12-14 04:47:24,732 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,732 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,732 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,733 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-12-14 04:47:24,733 WARN L623 FunctionHandler]: Unknown extern function netif_rx_ni [2022-12-14 04:47:24,734 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 04:47:24,735 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,735 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-12-14 04:47:24,736 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,736 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,737 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:24,737 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-12-14 04:47:24,738 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,739 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,743 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-12-14 04:47:24,743 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,743 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-12-14 04:47:24,744 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,745 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-12-14 04:47:24,745 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,746 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-14 04:47:24,746 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 04:47:24,747 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-14 04:47:24,761 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-12-14 04:47:24,762 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 04:47:24,763 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 04:47:24,763 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 04:47:24,764 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 04:47:24,764 WARN L623 FunctionHandler]: Unknown extern function can_led_event [2022-12-14 04:47:24,764 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:24,768 WARN L623 FunctionHandler]: Unknown extern function devm_clk_get [2022-12-14 04:47:24,768 WARN L623 FunctionHandler]: Unknown extern function clk_get_rate [2022-12-14 04:47:24,769 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-12-14 04:47:24,770 WARN L623 FunctionHandler]: Unknown extern function spi_get_device_id [2022-12-14 04:47:24,770 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-12-14 04:47:24,770 WARN L623 FunctionHandler]: Unknown extern function devm_regulator_get [2022-12-14 04:47:24,771 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 04:47:24,773 WARN L623 FunctionHandler]: Unknown extern function spi_setup [2022-12-14 04:47:24,774 WARN L623 FunctionHandler]: Unknown extern function devm_can_led_init [2022-12-14 04:47:24,774 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 04:47:24,774 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-14 04:47:24,775 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-14 04:47:24,776 WARN L623 FunctionHandler]: Unknown extern function disable_irq [2022-12-14 04:47:24,776 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-14 04:47:24,777 WARN L623 FunctionHandler]: Unknown extern function regulator_disable [2022-12-14 04:47:24,777 WARN L623 FunctionHandler]: Unknown extern function enable_irq [2022-12-14 04:47:24,785 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 04:47:24,786 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 04:47:24,787 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 04:47:24,791 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 04:47:24,810 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 04:47:24,813 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 04:47:24,814 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 04:47:24,814 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 04:47:24,814 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-12-14 04:47:24,815 WARN L623 FunctionHandler]: Unknown extern function unregister_candev [2022-12-14 04:47:24,815 WARN L623 FunctionHandler]: Unknown extern function spi_register_driver [2022-12-14 04:47:24,817 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 04:47:24,818 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 04:47:24,818 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 04:47:24,822 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_da6df535-cea1-4e46-a720-3b4a2d361445/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-12-14 04:47:24,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:47:24,885 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:47:24,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24 WrapperNode [2022-12-14 04:47:24,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:47:24,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:47:24,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:47:24,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:47:24,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:24,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,015 INFO L138 Inliner]: procedures = 306, calls = 1481, calls flagged for inlining = 179, calls inlined = 169, statements flattened = 4072 [2022-12-14 04:47:25,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:47:25,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:47:25,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:47:25,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:47:25,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:47:25,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:47:25,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:47:25,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:47:25,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (1/1) ... [2022-12-14 04:47:25,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:47:25,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:25,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:47:25,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:47:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 04:47:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 04:47:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 04:47:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 04:47:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 04:47:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 04:47:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-12-14 04:47:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-12-14 04:47:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-12-14 04:47:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-12-14 04:47:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 04:47:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 04:47:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-12-14 04:47:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-12-14 04:47:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-12-14 04:47:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-12-14 04:47:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-12-14 04:47:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-12-14 04:47:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-12-14 04:47:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-12-14 04:47:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-12-14 04:47:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-12-14 04:47:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-12-14 04:47:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-12-14 04:47:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-12-14 04:47:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-12-14 04:47:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-12-14 04:47:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-12-14 04:47:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:47:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-12-14 04:47:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 04:47:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-12-14 04:47:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-12-14 04:47:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 04:47:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-12-14 04:47:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-12-14 04:47:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-12-14 04:47:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-12-14 04:47:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-12-14 04:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-12-14 04:47:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-12-14 04:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-12-14 04:47:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-12-14 04:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-14 04:47:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-14 04:47:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-14 04:47:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-14 04:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-12-14 04:47:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-12-14 04:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 04:47:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 04:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-12-14 04:47:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-12-14 04:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-12-14 04:47:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-12-14 04:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-12-14 04:47:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-12-14 04:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-12-14 04:47:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-12-14 04:47:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-12-14 04:47:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-12-14 04:47:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-12-14 04:47:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 04:47:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 04:47:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 04:47:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-12-14 04:47:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-12-14 04:47:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:47:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-12-14 04:47:25,241 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-12-14 04:47:25,722 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:47:25,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:47:26,146 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 04:48:17,115 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-12-14 04:48:18,233 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:48:19,898 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:48:19,898 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 04:48:19,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:48:19 BoogieIcfgContainer [2022-12-14 04:48:19,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:48:19,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:48:19,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:48:19,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:48:19,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:47:23" (1/3) ... [2022-12-14 04:48:19,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d3ded4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:48:19, skipping insertion in model container [2022-12-14 04:48:19,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:24" (2/3) ... [2022-12-14 04:48:19,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d3ded4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:48:19, skipping insertion in model container [2022-12-14 04:48:19,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:48:19" (3/3) ... [2022-12-14 04:48:19,911 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-12-14 04:48:19,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:48:19,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:48:19,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:48:20,001 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;@51ea4b78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:48:20,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:48:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 640 states have (on average 1.328125) internal successors, (850), 660 states have internal predecessors, (850), 352 states have call successors, (352), 73 states have call predecessors, (352), 72 states have return successors, (343), 336 states have call predecessors, (343), 343 states have call successors, (343) [2022-12-14 04:48:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 04:48:20,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:20,027 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2022-12-14 04:48:20,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:20,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1916546293, now seen corresponding path program 1 times [2022-12-14 04:48:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:20,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670053554] [2022-12-14 04:48:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:20,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-12-14 04:48:20,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670053554] [2022-12-14 04:48:20,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670053554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:20,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:20,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:48:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329363384] [2022-12-14 04:48:20,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:20,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:20,993 INFO L87 Difference]: Start difference. First operand has 1065 states, 640 states have (on average 1.328125) internal successors, (850), 660 states have internal predecessors, (850), 352 states have call successors, (352), 73 states have call predecessors, (352), 72 states have return successors, (343), 336 states have call predecessors, (343), 343 states have call successors, (343) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 04:48:23,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:48:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:26,157 INFO L93 Difference]: Finished difference Result 3072 states and 4472 transitions. [2022-12-14 04:48:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2022-12-14 04:48:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:26,182 INFO L225 Difference]: With dead ends: 3072 [2022-12-14 04:48:26,182 INFO L226 Difference]: Without dead ends: 2017 [2022-12-14 04:48:26,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:26,193 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1437 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:26,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2870 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 500 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 04:48:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-12-14 04:48:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2022-12-14 04:48:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1225 states have (on average 1.3208163265306123) internal successors, (1618), 1266 states have internal predecessors, (1618), 651 states have call successors, (651), 141 states have call predecessors, (651), 140 states have return successors, (647), 633 states have call predecessors, (647), 647 states have call successors, (647) [2022-12-14 04:48:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2916 transitions. [2022-12-14 04:48:26,329 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2916 transitions. Word has length 135 [2022-12-14 04:48:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:26,329 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2916 transitions. [2022-12-14 04:48:26,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 04:48:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2916 transitions. [2022-12-14 04:48:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-14 04:48:26,338 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:26,338 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 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] [2022-12-14 04:48:26,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:48:26,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:26,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash 668169786, now seen corresponding path program 1 times [2022-12-14 04:48:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:26,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812230613] [2022-12-14 04:48:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-12-14 04:48:27,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:27,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812230613] [2022-12-14 04:48:27,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812230613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:27,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:27,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 04:48:27,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047293322] [2022-12-14 04:48:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:27,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:48:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:48:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:48:27,273 INFO L87 Difference]: Start difference. First operand 2017 states and 2916 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 04:48:29,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:48:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:34,429 INFO L93 Difference]: Finished difference Result 4015 states and 5841 transitions. [2022-12-14 04:48:34,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:48:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 179 [2022-12-14 04:48:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:34,463 INFO L225 Difference]: With dead ends: 4015 [2022-12-14 04:48:34,463 INFO L226 Difference]: Without dead ends: 4011 [2022-12-14 04:48:34,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:48:34,468 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1466 mSDsluCounter, 4610 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:34,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 6285 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1012 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-12-14 04:48:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-12-14 04:48:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4007. [2022-12-14 04:48:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 2435 states have (on average 1.3215605749486652) internal successors, (3218), 2518 states have internal predecessors, (3218), 1291 states have call successors, (1291), 283 states have call predecessors, (1291), 280 states have return successors, (1325), 1253 states have call predecessors, (1325), 1283 states have call successors, (1325) [2022-12-14 04:48:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5834 transitions. [2022-12-14 04:48:34,709 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5834 transitions. Word has length 179 [2022-12-14 04:48:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:34,710 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5834 transitions. [2022-12-14 04:48:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 04:48:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5834 transitions. [2022-12-14 04:48:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-14 04:48:34,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:34,718 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 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] [2022-12-14 04:48:34,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:48:34,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1597558848, now seen corresponding path program 1 times [2022-12-14 04:48:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:34,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878554353] [2022-12-14 04:48:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-12-14 04:48:35,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:35,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878554353] [2022-12-14 04:48:35,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878554353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:35,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:35,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 04:48:35,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448883878] [2022-12-14 04:48:35,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:35,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:48:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:35,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:48:35,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:48:35,676 INFO L87 Difference]: Start difference. First operand 4007 states and 5834 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 04:48:37,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:48:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:41,721 INFO L93 Difference]: Finished difference Result 4013 states and 5839 transitions. [2022-12-14 04:48:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:48:41,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 183 [2022-12-14 04:48:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:41,739 INFO L225 Difference]: With dead ends: 4013 [2022-12-14 04:48:41,739 INFO L226 Difference]: Without dead ends: 3984 [2022-12-14 04:48:41,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:48:41,743 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 1463 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3816 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:41,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3816 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 04:48:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2022-12-14 04:48:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3984. [2022-12-14 04:48:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3984 states, 2427 states have (on average 1.3209723939019364) internal successors, (3206), 2507 states have internal predecessors, (3206), 1279 states have call successors, (1279), 279 states have call predecessors, (1279), 277 states have return successors, (1317), 1245 states have call predecessors, (1317), 1275 states have call successors, (1317) [2022-12-14 04:48:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5802 transitions. [2022-12-14 04:48:41,885 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5802 transitions. Word has length 183 [2022-12-14 04:48:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:41,885 INFO L495 AbstractCegarLoop]: Abstraction has 3984 states and 5802 transitions. [2022-12-14 04:48:41,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 04:48:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5802 transitions. [2022-12-14 04:48:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-12-14 04:48:41,899 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:41,899 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:41,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:48:41,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:41,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash -455668903, now seen corresponding path program 1 times [2022-12-14 04:48:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:41,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321771540] [2022-12-14 04:48:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-12-14 04:48:42,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:42,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321771540] [2022-12-14 04:48:42,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321771540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:42,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:42,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:48:42,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897012426] [2022-12-14 04:48:42,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:42,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:42,555 INFO L87 Difference]: Start difference. First operand 3984 states and 5802 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-14 04:48:44,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:48:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:48,413 INFO L93 Difference]: Finished difference Result 11470 states and 16658 transitions. [2022-12-14 04:48:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:48,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 271 [2022-12-14 04:48:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:48,448 INFO L225 Difference]: With dead ends: 11470 [2022-12-14 04:48:48,449 INFO L226 Difference]: Without dead ends: 7509 [2022-12-14 04:48:48,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:48,466 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1234 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:48,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2771 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 560 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-12-14 04:48:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2022-12-14 04:48:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 7493. [2022-12-14 04:48:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7493 states, 4527 states have (on average 1.2999779103158824) internal successors, (5885), 4696 states have internal predecessors, (5885), 2415 states have call successors, (2415), 552 states have call predecessors, (2415), 550 states have return successors, (2463), 2340 states have call predecessors, (2463), 2411 states have call successors, (2463) [2022-12-14 04:48:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7493 states to 7493 states and 10763 transitions. [2022-12-14 04:48:48,768 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 10763 transitions. Word has length 271 [2022-12-14 04:48:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:48,769 INFO L495 AbstractCegarLoop]: Abstraction has 7493 states and 10763 transitions. [2022-12-14 04:48:48,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-14 04:48:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 10763 transitions. [2022-12-14 04:48:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-12-14 04:48:48,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:48,790 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:48,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:48:48,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash -751270922, now seen corresponding path program 1 times [2022-12-14 04:48:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:48,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029290900] [2022-12-14 04:48:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:48,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-14 04:48:49,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:49,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029290900] [2022-12-14 04:48:49,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029290900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:49,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:49,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:48:49,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106373899] [2022-12-14 04:48:49,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:49,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:49,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:49,230 INFO L87 Difference]: Start difference. First operand 7493 states and 10763 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-12-14 04:48:51,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:48:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:55,045 INFO L93 Difference]: Finished difference Result 16615 states and 23779 transitions. [2022-12-14 04:48:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:55,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 283 [2022-12-14 04:48:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:55,082 INFO L225 Difference]: With dead ends: 16615 [2022-12-14 04:48:55,083 INFO L226 Difference]: Without dead ends: 9145 [2022-12-14 04:48:55,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:55,102 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 1354 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:55,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 2928 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 550 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-12-14 04:48:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2022-12-14 04:48:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 9129. [2022-12-14 04:48:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9129 states, 5505 states have (on average 1.2864668483197093) internal successors, (7082), 5723 states have internal predecessors, (7082), 2923 states have call successors, (2923), 702 states have call predecessors, (2923), 700 states have return successors, (2970), 2823 states have call predecessors, (2970), 2919 states have call successors, (2970) [2022-12-14 04:48:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9129 states to 9129 states and 12975 transitions. [2022-12-14 04:48:55,429 INFO L78 Accepts]: Start accepts. Automaton has 9129 states and 12975 transitions. Word has length 283 [2022-12-14 04:48:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:55,429 INFO L495 AbstractCegarLoop]: Abstraction has 9129 states and 12975 transitions. [2022-12-14 04:48:55,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-12-14 04:48:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 9129 states and 12975 transitions. [2022-12-14 04:48:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-12-14 04:48:55,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:55,446 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:55,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 04:48:55,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:48:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash 381668015, now seen corresponding path program 1 times [2022-12-14 04:48:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:55,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360779535] [2022-12-14 04:48:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:55,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-12-14 04:48:56,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:56,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360779535] [2022-12-14 04:48:56,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360779535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:56,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:56,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:48:56,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771074911] [2022-12-14 04:48:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:56,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:56,013 INFO L87 Difference]: Start difference. First operand 9129 states and 12975 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-14 04:48:58,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:49:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:02,110 INFO L93 Difference]: Finished difference Result 25383 states and 36106 transitions. [2022-12-14 04:49:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 265 [2022-12-14 04:49:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:02,178 INFO L225 Difference]: With dead ends: 25383 [2022-12-14 04:49:02,178 INFO L226 Difference]: Without dead ends: 16277 [2022-12-14 04:49:02,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:02,211 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 1389 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:02,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 2911 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 523 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-12-14 04:49:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2022-12-14 04:49:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 16259. [2022-12-14 04:49:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16259 states, 9851 states have (on average 1.2857577910871993) internal successors, (12666), 10257 states have internal predecessors, (12666), 5151 states have call successors, (5151), 1262 states have call predecessors, (5151), 1256 states have return successors, (5241), 4955 states have call predecessors, (5241), 5147 states have call successors, (5241) [2022-12-14 04:49:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16259 states to 16259 states and 23058 transitions. [2022-12-14 04:49:02,840 INFO L78 Accepts]: Start accepts. Automaton has 16259 states and 23058 transitions. Word has length 265 [2022-12-14 04:49:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:02,840 INFO L495 AbstractCegarLoop]: Abstraction has 16259 states and 23058 transitions. [2022-12-14 04:49:02,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-14 04:49:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16259 states and 23058 transitions. [2022-12-14 04:49:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-12-14 04:49:02,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:02,868 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:02,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 04:49:02,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:02,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash 305304060, now seen corresponding path program 1 times [2022-12-14 04:49:02,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:02,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483987322] [2022-12-14 04:49:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-12-14 04:49:03,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483987322] [2022-12-14 04:49:03,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483987322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:03,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:03,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:49:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232927198] [2022-12-14 04:49:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:03,377 INFO L87 Difference]: Start difference. First operand 16259 states and 23058 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-14 04:49:05,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:49:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:10,520 INFO L93 Difference]: Finished difference Result 38165 states and 54242 transitions. [2022-12-14 04:49:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 270 [2022-12-14 04:49:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:10,620 INFO L225 Difference]: With dead ends: 38165 [2022-12-14 04:49:10,620 INFO L226 Difference]: Without dead ends: 23473 [2022-12-14 04:49:10,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:10,667 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 1404 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:10,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3521 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 04:49:10,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23473 states. [2022-12-14 04:49:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23473 to 23455. [2022-12-14 04:49:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 14223 states have (on average 1.2862265344863952) internal successors, (18294), 14817 states have internal predecessors, (18294), 7415 states have call successors, (7415), 1826 states have call predecessors, (7415), 1816 states have return successors, (7549), 7123 states have call predecessors, (7549), 7411 states have call successors, (7549) [2022-12-14 04:49:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 33258 transitions. [2022-12-14 04:49:11,527 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 33258 transitions. Word has length 270 [2022-12-14 04:49:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:11,528 INFO L495 AbstractCegarLoop]: Abstraction has 23455 states and 33258 transitions. [2022-12-14 04:49:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-14 04:49:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 33258 transitions. [2022-12-14 04:49:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-12-14 04:49:11,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:11,557 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:11,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 04:49:11,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:11,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1174822686, now seen corresponding path program 1 times [2022-12-14 04:49:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167893416] [2022-12-14 04:49:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-12-14 04:49:12,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167893416] [2022-12-14 04:49:12,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167893416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:12,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:12,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:49:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804824556] [2022-12-14 04:49:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:12,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:12,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:12,036 INFO L87 Difference]: Start difference. First operand 23455 states and 33258 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-14 04:49:14,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:49:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:19,401 INFO L93 Difference]: Finished difference Result 64471 states and 91240 transitions. [2022-12-14 04:49:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:19,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 281 [2022-12-14 04:49:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:19,549 INFO L225 Difference]: With dead ends: 64471 [2022-12-14 04:49:19,550 INFO L226 Difference]: Without dead ends: 41039 [2022-12-14 04:49:19,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:19,659 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1339 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:19,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3148 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 556 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 04:49:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41039 states. [2022-12-14 04:49:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41039 to 40983. [2022-12-14 04:49:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40983 states, 24906 states have (on average 1.2782462057335582) internal successors, (31836), 26012 states have internal predecessors, (31836), 12811 states have call successors, (12811), 3283 states have call predecessors, (12811), 3265 states have return successors, (13064), 12218 states have call predecessors, (13064), 12807 states have call successors, (13064) [2022-12-14 04:49:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40983 states to 40983 states and 57711 transitions. [2022-12-14 04:49:21,203 INFO L78 Accepts]: Start accepts. Automaton has 40983 states and 57711 transitions. Word has length 281 [2022-12-14 04:49:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:21,203 INFO L495 AbstractCegarLoop]: Abstraction has 40983 states and 57711 transitions. [2022-12-14 04:49:21,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-12-14 04:49:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 40983 states and 57711 transitions. [2022-12-14 04:49:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-12-14 04:49:21,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:21,250 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:21,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 04:49:21,250 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:21,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1862802293, now seen corresponding path program 1 times [2022-12-14 04:49:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:21,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806482916] [2022-12-14 04:49:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2022-12-14 04:49:21,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806482916] [2022-12-14 04:49:21,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806482916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:21,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:21,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:49:21,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145622926] [2022-12-14 04:49:21,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:21,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:21,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:21,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:21,801 INFO L87 Difference]: Start difference. First operand 40983 states and 57711 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-12-14 04:49:23,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:49:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:30,719 INFO L93 Difference]: Finished difference Result 100571 states and 141761 transitions. [2022-12-14 04:49:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 305 [2022-12-14 04:49:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:30,951 INFO L225 Difference]: With dead ends: 100571 [2022-12-14 04:49:30,951 INFO L226 Difference]: Without dead ends: 60035 [2022-12-14 04:49:31,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:31,112 INFO L413 NwaCegarLoop]: 2430 mSDtfsCounter, 1382 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:31,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 3673 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 733 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-12-14 04:49:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60035 states. [2022-12-14 04:49:33,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60035 to 59979. [2022-12-14 04:49:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59979 states, 36492 states have (on average 1.2770470240052614) internal successors, (46602), 38154 states have internal predecessors, (46602), 18697 states have call successors, (18697), 4815 states have call predecessors, (18697), 4789 states have return successors, (19065), 17800 states have call predecessors, (19065), 18693 states have call successors, (19065) [2022-12-14 04:49:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59979 states to 59979 states and 84364 transitions. [2022-12-14 04:49:33,399 INFO L78 Accepts]: Start accepts. Automaton has 59979 states and 84364 transitions. Word has length 305 [2022-12-14 04:49:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:33,400 INFO L495 AbstractCegarLoop]: Abstraction has 59979 states and 84364 transitions. [2022-12-14 04:49:33,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-12-14 04:49:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 59979 states and 84364 transitions. [2022-12-14 04:49:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-12-14 04:49:33,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:33,451 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 7, 7, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:33,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 04:49:33,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:33,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:33,452 INFO L85 PathProgramCache]: Analyzing trace with hash -9967556, now seen corresponding path program 1 times [2022-12-14 04:49:33,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:33,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340888020] [2022-12-14 04:49:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:33,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-12-14 04:49:34,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340888020] [2022-12-14 04:49:34,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340888020] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784528991] [2022-12-14 04:49:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:34,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:34,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:34,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:34,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:49:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:35,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 4121 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:49:35,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2022-12-14 04:49:36,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:49:36,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784528991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:36,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:49:36,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 04:49:36,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9651634] [2022-12-14 04:49:36,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:49:36,358 INFO L87 Difference]: Start difference. First operand 59979 states and 84364 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-12-14 04:49:38,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:49:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:46,328 INFO L93 Difference]: Finished difference Result 176388 states and 248199 transitions. [2022-12-14 04:49:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 299 [2022-12-14 04:49:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:46,758 INFO L225 Difference]: With dead ends: 176388 [2022-12-14 04:49:46,758 INFO L226 Difference]: Without dead ends: 116856 [2022-12-14 04:49:46,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:49:46,912 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 1356 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:46,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 2968 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 575 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-12-14 04:49:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116856 states. [2022-12-14 04:49:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116856 to 116851. [2022-12-14 04:49:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116851 states, 71496 states have (on average 1.2780295401141322) internal successors, (91374), 74484 states have internal predecessors, (91374), 36043 states have call successors, (36043), 9337 states have call predecessors, (36043), 9311 states have return successors, (36783), 34604 states have call predecessors, (36783), 36039 states have call successors, (36783) [2022-12-14 04:49:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116851 states to 116851 states and 164200 transitions. [2022-12-14 04:49:51,488 INFO L78 Accepts]: Start accepts. Automaton has 116851 states and 164200 transitions. Word has length 299 [2022-12-14 04:49:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:51,488 INFO L495 AbstractCegarLoop]: Abstraction has 116851 states and 164200 transitions. [2022-12-14 04:49:51,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-12-14 04:49:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 116851 states and 164200 transitions. [2022-12-14 04:49:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-12-14 04:49:51,582 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:51,582 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:51,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:49:51,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 04:49:51,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2007937070, now seen corresponding path program 1 times [2022-12-14 04:49:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:51,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973711228] [2022-12-14 04:49:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2022-12-14 04:49:52,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:52,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973711228] [2022-12-14 04:49:52,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973711228] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:52,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249411376] [2022-12-14 04:49:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:52,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:52,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:52,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:49:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:53,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 4041 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:49:53,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2022-12-14 04:49:53,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:49:53,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249411376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:53,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:49:53,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 04:49:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552497806] [2022-12-14 04:49:53,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:53,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:53,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:53,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:49:53,716 INFO L87 Difference]: Start difference. First operand 116851 states and 164200 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-12-14 04:49:55,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:50:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:50:05,833 INFO L93 Difference]: Finished difference Result 287421 states and 404006 transitions. [2022-12-14 04:50:05,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:50:05,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 297 [2022-12-14 04:50:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:50:06,595 INFO L225 Difference]: With dead ends: 287421 [2022-12-14 04:50:06,595 INFO L226 Difference]: Without dead ends: 171017 [2022-12-14 04:50:06,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:50:06,894 INFO L413 NwaCegarLoop]: 1875 mSDtfsCounter, 1383 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 04:50:06,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 3107 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-12-14 04:50:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171017 states. [2022-12-14 04:50:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171017 to 170937. [2022-12-14 04:50:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170937 states, 104852 states have (on average 1.277705718536604) internal successors, (133970), 109262 states have internal predecessors, (133970), 52339 states have call successors, (52339), 13783 states have call predecessors, (52339), 13745 states have return successors, (53427), 50170 states have call predecessors, (53427), 52335 states have call successors, (53427) [2022-12-14 04:50:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170937 states to 170937 states and 239736 transitions. [2022-12-14 04:50:14,022 INFO L78 Accepts]: Start accepts. Automaton has 170937 states and 239736 transitions. Word has length 297 [2022-12-14 04:50:14,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:50:14,023 INFO L495 AbstractCegarLoop]: Abstraction has 170937 states and 239736 transitions. [2022-12-14 04:50:14,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-12-14 04:50:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 170937 states and 239736 transitions. [2022-12-14 04:50:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-12-14 04:50:14,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:50:14,150 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:50:14,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:50:14,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 04:50:14,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:50:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:50:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 826262680, now seen corresponding path program 1 times [2022-12-14 04:50:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:50:14,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127514028] [2022-12-14 04:50:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:50:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:50:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2022-12-14 04:50:15,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:50:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127514028] [2022-12-14 04:50:15,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127514028] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:50:15,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:50:15,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 04:50:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636701758] [2022-12-14 04:50:15,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:50:15,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:50:15,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:50:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:50:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:50:15,893 INFO L87 Difference]: Start difference. First operand 170937 states and 239736 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-12-14 04:50:17,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:50:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:50:30,297 INFO L93 Difference]: Finished difference Result 342597 states and 484721 transitions. [2022-12-14 04:50:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:50:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 306 [2022-12-14 04:50:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:50:31,356 INFO L225 Difference]: With dead ends: 342597 [2022-12-14 04:50:31,356 INFO L226 Difference]: Without dead ends: 172107 [2022-12-14 04:50:31,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:50:31,813 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 2 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:50:31,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5060 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 982 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-12-14 04:50:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172107 states. [2022-12-14 04:50:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172107 to 171857. [2022-12-14 04:50:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171857 states, 105496 states have (on average 1.2760104648517478) internal successors, (134614), 109998 states have internal predecessors, (134614), 52339 states have call successors, (52339), 13783 states have call predecessors, (52339), 14021 states have return successors, (54846), 50354 states have call predecessors, (54846), 52335 states have call successors, (54846) [2022-12-14 04:50:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171857 states to 171857 states and 241799 transitions. [2022-12-14 04:50:38,575 INFO L78 Accepts]: Start accepts. Automaton has 171857 states and 241799 transitions. Word has length 306 [2022-12-14 04:50:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:50:38,575 INFO L495 AbstractCegarLoop]: Abstraction has 171857 states and 241799 transitions. [2022-12-14 04:50:38,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-12-14 04:50:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 171857 states and 241799 transitions. [2022-12-14 04:50:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-12-14 04:50:38,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:50:38,711 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:50:38,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 04:50:38,712 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:50:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:50:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash 598472735, now seen corresponding path program 1 times [2022-12-14 04:50:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:50:38,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527628857] [2022-12-14 04:50:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:50:38,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:50:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2022-12-14 04:50:40,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:50:40,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527628857] [2022-12-14 04:50:40,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527628857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:50:40,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:50:40,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 04:50:40,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424564579] [2022-12-14 04:50:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:50:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:50:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:50:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:50:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:50:40,585 INFO L87 Difference]: Start difference. First operand 171857 states and 241799 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-12-14 04:50:42,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:50:47,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:51:16,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:51:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:51:29,709 INFO L93 Difference]: Finished difference Result 264649 states and 376154 transitions. [2022-12-14 04:51:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:51:29,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 319 [2022-12-14 04:51:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:51:30,821 INFO L225 Difference]: With dead ends: 264649 [2022-12-14 04:51:30,821 INFO L226 Difference]: Without dead ends: 264227 [2022-12-14 04:51:30,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:51:30,926 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1935 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 5845 mSolverCounterSat, 1114 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 6961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1114 IncrementalHoareTripleChecker+Valid, 5845 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:51:30,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2243 Valid, 3038 Invalid, 6961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1114 Valid, 5845 Invalid, 2 Unknown, 0 Unchecked, 38.3s Time] [2022-12-14 04:51:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264227 states. [2022-12-14 04:51:41,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264227 to 263031. [2022-12-14 04:51:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263031 states, 161590 states have (on average 1.2754378364997834) internal successors, (206098), 168348 states have internal predecessors, (206098), 80307 states have call successors, (80307), 20627 states have call predecessors, (80307), 21133 states have return successors, (86946), 77470 states have call predecessors, (86946), 80303 states have call successors, (86946) [2022-12-14 04:51:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263031 states to 263031 states and 373351 transitions. [2022-12-14 04:51:43,184 INFO L78 Accepts]: Start accepts. Automaton has 263031 states and 373351 transitions. Word has length 319 [2022-12-14 04:51:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:51:43,185 INFO L495 AbstractCegarLoop]: Abstraction has 263031 states and 373351 transitions. [2022-12-14 04:51:43,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-12-14 04:51:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 263031 states and 373351 transitions. [2022-12-14 04:51:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-12-14 04:51:43,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:43,487 INFO L195 NwaCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 14, 11, 11, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 04:51:43,488 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:51:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash -983736877, now seen corresponding path program 1 times [2022-12-14 04:51:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:51:43,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543820570] [2022-12-14 04:51:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:51:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:51:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1423 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2022-12-14 04:51:44,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:51:44,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543820570] [2022-12-14 04:51:44,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543820570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:51:44,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:51:44,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:51:44,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060627251] [2022-12-14 04:51:44,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:51:44,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:51:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:51:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:51:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:51:44,878 INFO L87 Difference]: Start difference. First operand 263031 states and 373351 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 04:51:46,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 04:52:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:52:01,943 INFO L93 Difference]: Finished difference Result 525615 states and 752658 transitions. [2022-12-14 04:52:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:52:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 367 [2022-12-14 04:52:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:52:03,424 INFO L225 Difference]: With dead ends: 525615 [2022-12-14 04:52:03,425 INFO L226 Difference]: Without dead ends: 263031 [2022-12-14 04:52:04,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:52:04,339 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 60 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:52:04,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2450 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 460 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-12-14 04:52:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263031 states. [2022-12-14 04:52:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263031 to 263031. [2022-12-14 04:52:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263031 states, 161590 states have (on average 1.2731604678507333) internal successors, (205730), 168348 states have internal predecessors, (205730), 80307 states have call successors, (80307), 20627 states have call predecessors, (80307), 21133 states have return successors, (86946), 77470 states have call predecessors, (86946), 80303 states have call successors, (86946) [2022-12-14 04:52:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263031 states to 263031 states and 372983 transitions. [2022-12-14 04:52:16,321 INFO L78 Accepts]: Start accepts. Automaton has 263031 states and 372983 transitions. Word has length 367 [2022-12-14 04:52:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:52:16,321 INFO L495 AbstractCegarLoop]: Abstraction has 263031 states and 372983 transitions. [2022-12-14 04:52:16,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 04:52:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 263031 states and 372983 transitions. [2022-12-14 04:52:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-12-14 04:52:16,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:52:16,717 INFO L195 NwaCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 14, 13, 13, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:52:16,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 04:52:16,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:52:16,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:52:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1767563849, now seen corresponding path program 1 times [2022-12-14 04:52:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:52:16,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869411097] [2022-12-14 04:52:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:52:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:52:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:52:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2022-12-14 04:52:21,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:52:21,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869411097] [2022-12-14 04:52:21,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869411097] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:52:21,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391067194] [2022-12-14 04:52:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:52:21,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:52:21,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:52:21,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:52:21,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da6df535-cea1-4e46-a720-3b4a2d361445/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:52:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:52:22,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 4538 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 04:52:22,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:52:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 770 proven. 23 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2022-12-14 04:52:26,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:52:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 41 proven. 25 refuted. 0 times theorem prover too weak. 1579 trivial. 0 not checked. [2022-12-14 04:52:28,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391067194] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:52:28,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [707766812] [2022-12-14 04:52:28,576 INFO L159 IcfgInterpreter]: Started Sifa with 159 locations of interest [2022-12-14 04:52:28,577 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:52:28,580 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:52:28,585 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:52:28,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:57:57,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:57:58,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:57:58,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:57:58,398 INFO L217 Elim1Store]: Index analysis took 288 ms [2022-12-14 04:57:58,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1377 treesize of output 1263 [2022-12-14 04:57:59,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:57:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:57:59,524 INFO L217 Elim1Store]: Index analysis took 259 ms [2022-12-14 04:57:59,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1395 treesize of output 1278 [2022-12-14 04:58:00,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:00,737 INFO L217 Elim1Store]: Index analysis took 337 ms [2022-12-14 04:58:00,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:01,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:01,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:01,728 INFO L217 Elim1Store]: Index analysis took 176 ms [2022-12-14 04:58:01,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:02,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:02,714 INFO L217 Elim1Store]: Index analysis took 215 ms [2022-12-14 04:58:02,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:03,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:03,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:03,548 INFO L217 Elim1Store]: Index analysis took 146 ms [2022-12-14 04:58:03,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:04,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:04,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:04,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:04,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:04,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:04,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:05,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:05,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:05,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:06,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:06,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:06,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:06,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:07,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:08,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:08,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:08,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:08,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:09,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:09,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:09,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:09,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:09,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:09,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:10,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:10,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:10,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:11,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1399 treesize of output 1282 [2022-12-14 04:58:11,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:58:11,754 INFO L217 Elim1Store]: Index analysis took 120 ms [2022-12-14 04:58:11,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 153 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 152