./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/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_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/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_c50c17b2-1023-419a-a500-87d4e993b1d7/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 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 --- 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 16:00:38,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:00:38,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:00:38,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:00:38,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:00:38,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:00:38,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:00:38,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:00:38,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:00:39,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:00:39,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:00:39,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:00:39,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:00:39,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:00:39,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:00:39,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:00:39,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:00:39,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:00:39,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:00:39,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:00:39,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:00:39,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:00:39,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:00:39,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:00:39,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:00:39,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:00:39,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:00:39,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:00:39,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:00:39,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:00:39,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:00:39,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:00:39,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:00:39,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:00:39,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:00:39,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:00:39,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:00:39,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:00:39,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:00:39,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:00:39,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:00:39,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 16:00:39,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:00:39,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:00:39,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:00:39,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:00:39,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:00:39,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:00:39,043 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:00:39,043 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:00:39,043 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:00:39,044 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:00:39,044 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:00:39,044 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:00:39,044 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:00:39,044 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:00:39,045 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:00:39,045 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:00:39,045 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:00:39,045 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:00:39,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:00:39,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:00:39,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:00:39,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:00:39,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:00:39,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:00:39,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:00:39,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:00:39,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:00:39,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:00:39,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:00:39,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:00:39,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:00:39,049 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:00:39,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:00:39,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:00:39,049 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:00:39,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:00:39,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:00:39,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:00:39,050 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_c50c17b2-1023-419a-a500-87d4e993b1d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 [2022-12-14 16:00:39,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:00:39,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:00:39,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:00:39,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:00:39,240 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:00:39,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2022-12-14 16:00:41,805 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:00:42,151 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:00:42,151 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2022-12-14 16:00:42,175 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/data/4ad10ffe9/20c09b4e23dd45a18f54ac14f29d866c/FLAG19025462e [2022-12-14 16:00:42,380 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/data/4ad10ffe9/20c09b4e23dd45a18f54ac14f29d866c [2022-12-14 16:00:42,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:00:42,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:00:42,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:00:42,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:00:42,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:00:42,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:00:42" (1/1) ... [2022-12-14 16:00:42,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ad10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:42, skipping insertion in model container [2022-12-14 16:00:42,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:00:42" (1/1) ... [2022-12-14 16:00:42,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:00:42,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:00:42,790 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 16:00:42,797 WARN L623 FunctionHandler]: Unknown extern function __list_del_entry [2022-12-14 16:00:42,844 WARN L623 FunctionHandler]: Unknown extern function __xadd_wrong_size [2022-12-14 16:00:42,984 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 16:00:43,036 WARN L623 FunctionHandler]: Unknown extern function __kmalloc [2022-12-14 16:00:43,105 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 16:00:43,111 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 16:00:43,130 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 16:00:43,131 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 16:00:43,132 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 16:00:43,135 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 16:00:43,136 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 16:00:43,136 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 16:00:43,162 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,354 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,354 WARN L623 FunctionHandler]: Unknown extern function vmalloc_to_pfn [2022-12-14 16:00:43,355 WARN L623 FunctionHandler]: Unknown extern function remap_pfn_range [2022-12-14 16:00:43,389 WARN L623 FunctionHandler]: Unknown extern function fb_sys_write [2022-12-14 16:00:43,393 WARN L623 FunctionHandler]: Unknown extern function sys_copyarea [2022-12-14 16:00:43,397 WARN L623 FunctionHandler]: Unknown extern function sys_imageblit [2022-12-14 16:00:43,400 WARN L623 FunctionHandler]: Unknown extern function sys_fillrect [2022-12-14 16:00:43,411 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-12-14 16:00:43,412 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,413 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,427 WARN L623 FunctionHandler]: Unknown extern function fb_deferred_io_init [2022-12-14 16:00:43,428 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,431 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,431 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,432 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,432 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,435 WARN L623 FunctionHandler]: Unknown extern function up [2022-12-14 16:00:43,438 WARN L623 FunctionHandler]: Unknown extern function unregister_framebuffer [2022-12-14 16:00:43,439 WARN L623 FunctionHandler]: Unknown extern function fb_dealloc_cmap [2022-12-14 16:00:43,439 WARN L623 FunctionHandler]: Unknown extern function fb_destroy_modedb [2022-12-14 16:00:43,440 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,440 WARN L623 FunctionHandler]: Unknown extern function fb_destroy_modelist [2022-12-14 16:00:43,440 WARN L623 FunctionHandler]: Unknown extern function framebuffer_release [2022-12-14 16:00:43,440 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,447 WARN L623 FunctionHandler]: Unknown extern function fb_deferred_io_cleanup [2022-12-14 16:00:43,447 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,448 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,451 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,452 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,459 WARN L623 FunctionHandler]: Unknown extern function fb_var_to_videomode [2022-12-14 16:00:43,463 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,471 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,477 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,478 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 16:00:43,478 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,479 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,479 WARN L623 FunctionHandler]: Unknown extern function vzalloc [2022-12-14 16:00:43,480 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,480 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,484 WARN L623 FunctionHandler]: Unknown extern function fb_destroy_modelist [2022-12-14 16:00:43,485 WARN L623 FunctionHandler]: Unknown extern function fb_edid_to_monspecs [2022-12-14 16:00:43,486 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,486 WARN L623 FunctionHandler]: Unknown extern function fb_edid_to_monspecs [2022-12-14 16:00:43,486 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,487 WARN L623 FunctionHandler]: Unknown extern function fb_edid_to_monspecs [2022-12-14 16:00:43,488 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,488 WARN L623 FunctionHandler]: Unknown extern function fb_add_videomode [2022-12-14 16:00:43,489 WARN L623 FunctionHandler]: Unknown extern function fb_find_best_display [2022-12-14 16:00:43,491 WARN L623 FunctionHandler]: Unknown extern function fb_add_videomode [2022-12-14 16:00:43,491 WARN L623 FunctionHandler]: Unknown extern function fb_find_nearest_mode [2022-12-14 16:00:43,492 WARN L623 FunctionHandler]: Unknown extern function fb_videomode_to_var [2022-12-14 16:00:43,493 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,513 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,517 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 16:00:43,518 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,528 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-12-14 16:00:43,532 WARN L623 FunctionHandler]: Unknown extern function usb_get_descriptor [2022-12-14 16:00:43,532 WARN L623 FunctionHandler]: Unknown extern function __usb_get_extra_descriptor [2022-12-14 16:00:43,533 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,535 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,535 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,536 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,536 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,542 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 16:00:43,543 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,543 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,544 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,544 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,545 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,545 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,545 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,546 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,546 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 16:00:43,546 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,547 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 16:00:43,548 WARN L623 FunctionHandler]: Unknown extern function framebuffer_alloc [2022-12-14 16:00:43,549 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,549 WARN L623 FunctionHandler]: Unknown extern function fb_alloc_cmap [2022-12-14 16:00:43,549 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,550 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 16:00:43,550 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,550 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 16:00:43,551 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,551 WARN L623 FunctionHandler]: Unknown extern function register_framebuffer [2022-12-14 16:00:43,551 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,552 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 16:00:43,552 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,553 WARN L623 FunctionHandler]: Unknown extern function device_create_bin_file [2022-12-14 16:00:43,553 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,553 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,557 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,557 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-14 16:00:43,558 WARN L623 FunctionHandler]: Unknown extern function device_remove_bin_file [2022-12-14 16:00:43,558 WARN L623 FunctionHandler]: Unknown extern function unlink_framebuffer [2022-12-14 16:00:43,566 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,567 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 16:00:43,567 WARN L623 FunctionHandler]: Unknown extern function up [2022-12-14 16:00:43,568 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,568 WARN L623 FunctionHandler]: Unknown extern function down_interruptible [2022-12-14 16:00:43,568 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 16:00:43,569 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-14 16:00:43,569 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 16:00:43,569 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,570 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 16:00:43,571 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 16:00:43,571 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,571 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 16:00:43,572 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 16:00:43,572 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,572 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_coherent [2022-12-14 16:00:43,572 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,573 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 16:00:43,573 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,574 WARN L623 FunctionHandler]: Unknown extern function down_timeout [2022-12-14 16:00:43,574 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,575 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 16:00:43,576 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 16:00:43,576 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,605 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 16:00:43,607 WARN L623 FunctionHandler]: Unknown extern function fb_sys_read [2022-12-14 16:00:43,609 WARN L623 FunctionHandler]: Unknown extern function ldv_release_6 [2022-12-14 16:00:43,609 WARN L623 FunctionHandler]: Unknown extern function ldv_probe_6 [2022-12-14 16:00:43,611 WARN L623 FunctionHandler]: Unknown extern function ldv_release_5 [2022-12-14 16:00:43,611 WARN L623 FunctionHandler]: Unknown extern function ldv_probe_5 [2022-12-14 16:00:43,612 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 16:00:43,613 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 16:00:43,613 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 16:00:43,613 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-14 16:00:43,614 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 16:00:43,614 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,614 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,614 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,615 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 16:00:43,615 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,615 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,616 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,616 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,616 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,616 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,616 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,617 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,617 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-12-14 16:00:43,617 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-12-14 16:00:43,620 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_c50c17b2-1023-419a-a500-87d4e993b1d7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2022-12-14 16:00:43,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:00:43,781 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:00:43,836 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 16:00:43,836 WARN L623 FunctionHandler]: Unknown extern function __list_del_entry [2022-12-14 16:00:43,838 WARN L623 FunctionHandler]: Unknown extern function __xadd_wrong_size [2022-12-14 16:00:43,841 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 16:00:43,843 WARN L623 FunctionHandler]: Unknown extern function __kmalloc [2022-12-14 16:00:43,844 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 16:00:43,845 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 16:00:43,846 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 16:00:43,847 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 16:00:43,847 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 16:00:43,847 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-12-14 16:00:43,847 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 16:00:43,848 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 16:00:43,850 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,866 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,866 WARN L623 FunctionHandler]: Unknown extern function vmalloc_to_pfn [2022-12-14 16:00:43,867 WARN L623 FunctionHandler]: Unknown extern function remap_pfn_range [2022-12-14 16:00:43,878 WARN L623 FunctionHandler]: Unknown extern function fb_sys_write [2022-12-14 16:00:43,879 WARN L623 FunctionHandler]: Unknown extern function sys_copyarea [2022-12-14 16:00:43,880 WARN L623 FunctionHandler]: Unknown extern function sys_imageblit [2022-12-14 16:00:43,880 WARN L623 FunctionHandler]: Unknown extern function sys_fillrect [2022-12-14 16:00:43,884 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-12-14 16:00:43,884 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,885 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,890 WARN L623 FunctionHandler]: Unknown extern function fb_deferred_io_init [2022-12-14 16:00:43,890 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,890 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,891 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,891 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,891 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,891 WARN L623 FunctionHandler]: Unknown extern function up [2022-12-14 16:00:43,892 WARN L623 FunctionHandler]: Unknown extern function unregister_framebuffer [2022-12-14 16:00:43,892 WARN L623 FunctionHandler]: Unknown extern function fb_dealloc_cmap [2022-12-14 16:00:43,892 WARN L623 FunctionHandler]: Unknown extern function fb_destroy_modedb [2022-12-14 16:00:43,893 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,893 WARN L623 FunctionHandler]: Unknown extern function fb_destroy_modelist [2022-12-14 16:00:43,893 WARN L623 FunctionHandler]: Unknown extern function framebuffer_release [2022-12-14 16:00:43,893 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,894 WARN L623 FunctionHandler]: Unknown extern function fb_deferred_io_cleanup [2022-12-14 16:00:43,894 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,896 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,896 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,897 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,898 WARN L623 FunctionHandler]: Unknown extern function fb_var_to_videomode [2022-12-14 16:00:43,899 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,901 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,902 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,903 WARN L623 FunctionHandler]: Unknown extern function vmalloc [2022-12-14 16:00:43,903 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,904 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,904 WARN L623 FunctionHandler]: Unknown extern function vzalloc [2022-12-14 16:00:43,904 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,904 WARN L623 FunctionHandler]: Unknown extern function vfree [2022-12-14 16:00:43,905 WARN L623 FunctionHandler]: Unknown extern function fb_destroy_modelist [2022-12-14 16:00:43,906 WARN L623 FunctionHandler]: Unknown extern function fb_edid_to_monspecs [2022-12-14 16:00:43,906 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,906 WARN L623 FunctionHandler]: Unknown extern function fb_edid_to_monspecs [2022-12-14 16:00:43,907 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,907 WARN L623 FunctionHandler]: Unknown extern function fb_edid_to_monspecs [2022-12-14 16:00:43,907 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,908 WARN L623 FunctionHandler]: Unknown extern function fb_add_videomode [2022-12-14 16:00:43,908 WARN L623 FunctionHandler]: Unknown extern function fb_find_best_display [2022-12-14 16:00:43,909 WARN L623 FunctionHandler]: Unknown extern function fb_add_videomode [2022-12-14 16:00:43,910 WARN L623 FunctionHandler]: Unknown extern function fb_find_nearest_mode [2022-12-14 16:00:43,910 WARN L623 FunctionHandler]: Unknown extern function fb_videomode_to_var [2022-12-14 16:00:43,911 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,914 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,915 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 16:00:43,916 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,919 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-12-14 16:00:43,920 WARN L623 FunctionHandler]: Unknown extern function usb_get_descriptor [2022-12-14 16:00:43,920 WARN L623 FunctionHandler]: Unknown extern function __usb_get_extra_descriptor [2022-12-14 16:00:43,921 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,922 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,923 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,923 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,923 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,924 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 16:00:43,924 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,925 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,925 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,925 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,925 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,926 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,926 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,926 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,927 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 16:00:43,927 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,927 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 16:00:43,928 WARN L623 FunctionHandler]: Unknown extern function framebuffer_alloc [2022-12-14 16:00:43,929 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,929 WARN L623 FunctionHandler]: Unknown extern function fb_alloc_cmap [2022-12-14 16:00:43,929 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,929 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 16:00:43,930 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,930 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 16:00:43,931 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,931 WARN L623 FunctionHandler]: Unknown extern function register_framebuffer [2022-12-14 16:00:43,931 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,931 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-14 16:00:43,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,932 WARN L623 FunctionHandler]: Unknown extern function device_create_bin_file [2022-12-14 16:00:43,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,933 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,934 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-14 16:00:43,934 WARN L623 FunctionHandler]: Unknown extern function device_remove_bin_file [2022-12-14 16:00:43,934 WARN L623 FunctionHandler]: Unknown extern function unlink_framebuffer [2022-12-14 16:00:43,937 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,938 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 16:00:43,938 WARN L623 FunctionHandler]: Unknown extern function up [2022-12-14 16:00:43,939 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,939 WARN L623 FunctionHandler]: Unknown extern function down_interruptible [2022-12-14 16:00:43,939 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 16:00:43,940 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-14 16:00:43,940 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 16:00:43,940 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,941 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 16:00:43,942 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-14 16:00:43,943 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-14 16:00:43,943 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 16:00:43,943 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-12-14 16:00:43,944 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,944 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_coherent [2022-12-14 16:00:43,944 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 16:00:43,944 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-12-14 16:00:43,945 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,946 WARN L623 FunctionHandler]: Unknown extern function down_timeout [2022-12-14 16:00:43,946 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,946 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 16:00:43,947 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-12-14 16:00:43,947 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 16:00:43,955 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 16:00:43,957 WARN L623 FunctionHandler]: Unknown extern function fb_sys_read [2022-12-14 16:00:43,958 WARN L623 FunctionHandler]: Unknown extern function ldv_release_6 [2022-12-14 16:00:43,959 WARN L623 FunctionHandler]: Unknown extern function ldv_probe_6 [2022-12-14 16:00:43,960 WARN L623 FunctionHandler]: Unknown extern function ldv_release_5 [2022-12-14 16:00:43,960 WARN L623 FunctionHandler]: Unknown extern function ldv_probe_5 [2022-12-14 16:00:43,961 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 16:00:43,962 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 16:00:43,962 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-14 16:00:43,962 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-14 16:00:43,962 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-14 16:00:43,963 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,963 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,963 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,963 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 16:00:43,963 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,963 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,964 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,964 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,964 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,964 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,964 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 16:00:43,964 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 16:00:43,965 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-12-14 16:00:43,965 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-12-14 16:00:43,965 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_c50c17b2-1023-419a-a500-87d4e993b1d7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2022-12-14 16:00:43,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:00:44,095 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:00:44,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44 WrapperNode [2022-12-14 16:00:44,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:00:44,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:00:44,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:00:44,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:00:44,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,319 INFO L138 Inliner]: procedures = 319, calls = 1680, calls flagged for inlining = 115, calls inlined = 107, statements flattened = 4020 [2022-12-14 16:00:44,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:00:44,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:00:44,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:00:44,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:00:44,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:00:44,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:00:44,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:00:44,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:00:44,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (1/1) ... [2022-12-14 16:00:44,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:00:44,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:00:44,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:00:44,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-12-14 16:00:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2022-12-14 16:00:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-12-14 16:00:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2022-12-14 16:00:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2022-12-14 16:00:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 16:00:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 16:00:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 16:00:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 16:00:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 16:00:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2022-12-14 16:00:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2022-12-14 16:00:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2022-12-14 16:00:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2022-12-14 16:00:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2022-12-14 16:00:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2022-12-14 16:00:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 16:00:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 16:00:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2022-12-14 16:00:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2022-12-14 16:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-12-14 16:00:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-12-14 16:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2022-12-14 16:00:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2022-12-14 16:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2022-12-14 16:00:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2022-12-14 16:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2022-12-14 16:00:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2022-12-14 16:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-12-14 16:00:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-12-14 16:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-12-14 16:00:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-12-14 16:00:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2022-12-14 16:00:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-14 16:00:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-12-14 16:00:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-12-14 16:00:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 16:00:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2022-12-14 16:00:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 16:00:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2022-12-14 16:00:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2022-12-14 16:00:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2022-12-14 16:00:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2022-12-14 16:00:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-12-14 16:00:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-12-14 16:00:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-12-14 16:00:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-12-14 16:00:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2022-12-14 16:00:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2022-12-14 16:00:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:00:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-12-14 16:00:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-12-14 16:00:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 16:00:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2022-12-14 16:00:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2022-12-14 16:00:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-12-14 16:00:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-12-14 16:00:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 16:00:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2022-12-14 16:00:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2022-12-14 16:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-12-14 16:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-12-14 16:00:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-12-14 16:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2022-12-14 16:00:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2022-12-14 16:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-12-14 16:00:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-12-14 16:00:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 16:00:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2022-12-14 16:00:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2022-12-14 16:00:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-12-14 16:00:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-12-14 16:00:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-12-14 16:00:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-12-14 16:00:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-12-14 16:00:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-12-14 16:00:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-12-14 16:00:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-12-14 16:00:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2022-12-14 16:00:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2022-12-14 16:00:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-12-14 16:00:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-12-14 16:00:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-12-14 16:00:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-12-14 16:00:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 16:00:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2022-12-14 16:00:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2022-12-14 16:00:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-12-14 16:00:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-12-14 16:00:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_fb_info [2022-12-14 16:00:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_fb_info [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2022-12-14 16:00:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2022-12-14 16:00:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 16:00:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2022-12-14 16:00:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2022-12-14 16:00:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-12-14 16:00:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 16:00:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-12-14 16:00:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-12-14 16:00:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2022-12-14 16:00:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2022-12-14 16:00:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2022-12-14 16:00:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-12-14 16:00:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-12-14 16:00:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 16:00:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_release_urb_work [2022-12-14 16:00:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_release_urb_work [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-12-14 16:00:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2022-12-14 16:00:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-12-14 16:00:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2022-12-14 16:00:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2022-12-14 16:00:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 16:00:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2022-12-14 16:00:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2022-12-14 16:00:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-12-14 16:00:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-12-14 16:00:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-14 16:00:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-14 16:00:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2022-12-14 16:00:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2022-12-14 16:00:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-12-14 16:00:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-12-14 16:00:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:00:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-12-14 16:00:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-12-14 16:00:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:00:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:00:45,069 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:00:45,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:00:45,239 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 16:00:53,690 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:00:54,413 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:00:54,413 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 16:00:54,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:00:54 BoogieIcfgContainer [2022-12-14 16:00:54,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:00:54,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:00:54,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:00:54,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:00:54,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:00:42" (1/3) ... [2022-12-14 16:00:54,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2268fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:00:54, skipping insertion in model container [2022-12-14 16:00:54,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:00:44" (2/3) ... [2022-12-14 16:00:54,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2268fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:00:54, skipping insertion in model container [2022-12-14 16:00:54,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:00:54" (3/3) ... [2022-12-14 16:00:54,422 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2022-12-14 16:00:54,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:00:54,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:00:54,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:00:54,492 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;@f52beb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:00:54,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 16:00:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 1008 states, 632 states have (on average 1.3623417721518987) internal successors, (861), 663 states have internal predecessors, (861), 294 states have call successors, (294), 81 states have call predecessors, (294), 80 states have return successors, (286), 281 states have call predecessors, (286), 286 states have call successors, (286) [2022-12-14 16:00:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-12-14 16:00:54,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:00:54,519 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:54,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:00:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:00:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash 31124130, now seen corresponding path program 1 times [2022-12-14 16:00:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:00:54,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953189216] [2022-12-14 16:00:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:00:54,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:00:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:00:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2022-12-14 16:00:55,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:00:55,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953189216] [2022-12-14 16:00:55,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953189216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:00:55,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:00:55,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:00:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624717825] [2022-12-14 16:00:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:00:55,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:00:55,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:00:55,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:00:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:00:55,517 INFO L87 Difference]: Start difference. First operand has 1008 states, 632 states have (on average 1.3623417721518987) internal successors, (861), 663 states have internal predecessors, (861), 294 states have call successors, (294), 81 states have call predecessors, (294), 80 states have return successors, (286), 281 states have call predecessors, (286), 286 states have call successors, (286) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-12-14 16:00:57,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:01,147 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 16:01:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:01,870 INFO L93 Difference]: Finished difference Result 2876 states and 4160 transitions. [2022-12-14 16:01:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:01,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 301 [2022-12-14 16:01:01,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:01,897 INFO L225 Difference]: With dead ends: 2876 [2022-12-14 16:01:01,897 INFO L226 Difference]: Without dead ends: 1903 [2022-12-14 16:01:01,907 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 16:01:01,909 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1303 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:01,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 2776 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 336 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 16:01:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-12-14 16:01:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1899. [2022-12-14 16:01:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1210 states have (on average 1.350413223140496) internal successors, (1634), 1246 states have internal predecessors, (1634), 531 states have call successors, (531), 158 states have call predecessors, (531), 157 states have return successors, (524), 514 states have call predecessors, (524), 524 states have call successors, (524) [2022-12-14 16:01:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2689 transitions. [2022-12-14 16:01:02,082 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2689 transitions. Word has length 301 [2022-12-14 16:01:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:02,084 INFO L495 AbstractCegarLoop]: Abstraction has 1899 states and 2689 transitions. [2022-12-14 16:01:02,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-12-14 16:01:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2689 transitions. [2022-12-14 16:01:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-12-14 16:01:02,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:02,096 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 16:01:02,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1475807438, now seen corresponding path program 1 times [2022-12-14 16:01:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:02,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945265966] [2022-12-14 16:01:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2022-12-14 16:01:02,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:02,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945265966] [2022-12-14 16:01:02,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945265966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:02,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:01:02,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:01:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609244262] [2022-12-14 16:01:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:02,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:01:02,484 INFO L87 Difference]: Start difference. First operand 1899 states and 2689 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:03,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:06,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:07,776 INFO L93 Difference]: Finished difference Result 5514 states and 7789 transitions. [2022-12-14 16:01:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:07,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 313 [2022-12-14 16:01:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:07,793 INFO L225 Difference]: With dead ends: 5514 [2022-12-14 16:01:07,793 INFO L226 Difference]: Without dead ends: 3676 [2022-12-14 16:01:07,799 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 16:01:07,800 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 1341 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:07,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 2636 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 16:01:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2022-12-14 16:01:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3661. [2022-12-14 16:01:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 2335 states have (on average 1.3498929336188437) internal successors, (3152), 2401 states have internal predecessors, (3152), 1012 states have call successors, (1012), 314 states have call predecessors, (1012), 313 states have return successors, (1005), 985 states have call predecessors, (1005), 1005 states have call successors, (1005) [2022-12-14 16:01:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5169 transitions. [2022-12-14 16:01:07,925 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5169 transitions. Word has length 313 [2022-12-14 16:01:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:07,926 INFO L495 AbstractCegarLoop]: Abstraction has 3661 states and 5169 transitions. [2022-12-14 16:01:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5169 transitions. [2022-12-14 16:01:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-12-14 16:01:07,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:07,933 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:07,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 16:01:07,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 774498049, now seen corresponding path program 1 times [2022-12-14 16:01:07,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:07,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456888088] [2022-12-14 16:01:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:07,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-12-14 16:01:08,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:08,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456888088] [2022-12-14 16:01:08,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456888088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:08,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:01:08,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:01:08,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799235112] [2022-12-14 16:01:08,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:01:08,289 INFO L87 Difference]: Start difference. First operand 3661 states and 5169 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:10,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:12,430 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 16:01:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:13,168 INFO L93 Difference]: Finished difference Result 3663 states and 5170 transitions. [2022-12-14 16:01:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:13,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2022-12-14 16:01:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:13,184 INFO L225 Difference]: With dead ends: 3663 [2022-12-14 16:01:13,184 INFO L226 Difference]: Without dead ends: 3660 [2022-12-14 16:01:13,186 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 16:01:13,187 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 1332 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:13,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1241 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-12-14 16:01:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2022-12-14 16:01:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3660. [2022-12-14 16:01:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2335 states have (on average 1.3494646680942184) internal successors, (3151), 2400 states have internal predecessors, (3151), 1011 states have call successors, (1011), 314 states have call predecessors, (1011), 313 states have return successors, (1005), 985 states have call predecessors, (1005), 1005 states have call successors, (1005) [2022-12-14 16:01:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5167 transitions. [2022-12-14 16:01:13,311 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5167 transitions. Word has length 316 [2022-12-14 16:01:13,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:13,312 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 5167 transitions. [2022-12-14 16:01:13,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:13,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5167 transitions. [2022-12-14 16:01:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-12-14 16:01:13,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:13,317 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:13,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 16:01:13,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:13,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:13,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1760774942, now seen corresponding path program 1 times [2022-12-14 16:01:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:13,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216297506] [2022-12-14 16:01:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:13,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-12-14 16:01:13,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:13,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216297506] [2022-12-14 16:01:13,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216297506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:13,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:01:13,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:01:13,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198406110] [2022-12-14 16:01:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:13,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:01:13,606 INFO L87 Difference]: Start difference. First operand 3660 states and 5167 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:16,344 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 16:01:17,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:17,151 INFO L93 Difference]: Finished difference Result 3662 states and 5168 transitions. [2022-12-14 16:01:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:17,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2022-12-14 16:01:17,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:17,164 INFO L225 Difference]: With dead ends: 3662 [2022-12-14 16:01:17,164 INFO L226 Difference]: Without dead ends: 3659 [2022-12-14 16:01:17,166 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 16:01:17,166 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 1329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:17,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1239 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 16:01:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-12-14 16:01:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3659. [2022-12-14 16:01:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2335 states have (on average 1.3490364025695931) internal successors, (3150), 2399 states have internal predecessors, (3150), 1010 states have call successors, (1010), 314 states have call predecessors, (1010), 313 states have return successors, (1005), 985 states have call predecessors, (1005), 1005 states have call successors, (1005) [2022-12-14 16:01:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5165 transitions. [2022-12-14 16:01:17,289 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5165 transitions. Word has length 317 [2022-12-14 16:01:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:17,289 INFO L495 AbstractCegarLoop]: Abstraction has 3659 states and 5165 transitions. [2022-12-14 16:01:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5165 transitions. [2022-12-14 16:01:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-12-14 16:01:17,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:17,294 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:17,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 16:01:17,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1250145828, now seen corresponding path program 1 times [2022-12-14 16:01:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:17,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746391678] [2022-12-14 16:01:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-12-14 16:01:17,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:17,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746391678] [2022-12-14 16:01:17,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746391678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:17,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:01:17,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:01:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967608001] [2022-12-14 16:01:17,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:17,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:01:17,559 INFO L87 Difference]: Start difference. First operand 3659 states and 5165 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:19,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:21,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:22,521 INFO L93 Difference]: Finished difference Result 10781 states and 15640 transitions. [2022-12-14 16:01:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:22,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 318 [2022-12-14 16:01:22,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:22,551 INFO L225 Difference]: With dead ends: 10781 [2022-12-14 16:01:22,551 INFO L226 Difference]: Without dead ends: 7191 [2022-12-14 16:01:22,564 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 16:01:22,564 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1341 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:22,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 2827 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 353 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-12-14 16:01:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2022-12-14 16:01:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7175. [2022-12-14 16:01:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7175 states, 4598 states have (on average 1.352327098738582) internal successors, (6218), 4722 states have internal predecessors, (6218), 1973 states have call successors, (1973), 609 states have call predecessors, (1973), 603 states have return successors, (2163), 1923 states have call predecessors, (2163), 1967 states have call successors, (2163) [2022-12-14 16:01:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10354 transitions. [2022-12-14 16:01:22,856 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10354 transitions. Word has length 318 [2022-12-14 16:01:22,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:22,856 INFO L495 AbstractCegarLoop]: Abstraction has 7175 states and 10354 transitions. [2022-12-14 16:01:22,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10354 transitions. [2022-12-14 16:01:22,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-12-14 16:01:22,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:22,861 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:22,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 16:01:22,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash 99414053, now seen corresponding path program 1 times [2022-12-14 16:01:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:22,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403580505] [2022-12-14 16:01:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:22,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-12-14 16:01:23,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:23,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403580505] [2022-12-14 16:01:23,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403580505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:23,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:01:23,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:01:23,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099831039] [2022-12-14 16:01:23,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:23,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:23,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:23,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:23,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:01:23,118 INFO L87 Difference]: Start difference. First operand 7175 states and 10354 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:25,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:27,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:27,994 INFO L93 Difference]: Finished difference Result 7177 states and 10355 transitions. [2022-12-14 16:01:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:27,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 319 [2022-12-14 16:01:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:28,033 INFO L225 Difference]: With dead ends: 7177 [2022-12-14 16:01:28,034 INFO L226 Difference]: Without dead ends: 7174 [2022-12-14 16:01:28,037 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 16:01:28,037 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 1325 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:28,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1237 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 16:01:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2022-12-14 16:01:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 7174. [2022-12-14 16:01:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7174 states, 4598 states have (on average 1.352109612875163) internal successors, (6217), 4721 states have internal predecessors, (6217), 1972 states have call successors, (1972), 609 states have call predecessors, (1972), 603 states have return successors, (2163), 1923 states have call predecessors, (2163), 1967 states have call successors, (2163) [2022-12-14 16:01:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7174 states to 7174 states and 10352 transitions. [2022-12-14 16:01:28,412 INFO L78 Accepts]: Start accepts. Automaton has 7174 states and 10352 transitions. Word has length 319 [2022-12-14 16:01:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:28,412 INFO L495 AbstractCegarLoop]: Abstraction has 7174 states and 10352 transitions. [2022-12-14 16:01:28,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7174 states and 10352 transitions. [2022-12-14 16:01:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-12-14 16:01:28,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:28,415 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 16:01:28,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1213527737, now seen corresponding path program 1 times [2022-12-14 16:01:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:28,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312121582] [2022-12-14 16:01:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2022-12-14 16:01:28,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:28,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312121582] [2022-12-14 16:01:28,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312121582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:28,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:01:28,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:01:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196379034] [2022-12-14 16:01:28,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:28,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:28,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:28,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:01:28,662 INFO L87 Difference]: Start difference. First operand 7174 states and 10352 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:30,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:32,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:33,618 INFO L93 Difference]: Finished difference Result 7176 states and 10353 transitions. [2022-12-14 16:01:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:33,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 320 [2022-12-14 16:01:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:33,639 INFO L225 Difference]: With dead ends: 7176 [2022-12-14 16:01:33,639 INFO L226 Difference]: Without dead ends: 7167 [2022-12-14 16:01:33,642 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 16:01:33,643 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 1322 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:33,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 1236 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 16:01:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2022-12-14 16:01:33,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7167. [2022-12-14 16:01:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 4592 states have (on average 1.3512630662020906) internal successors, (6205), 4714 states have internal predecessors, (6205), 1971 states have call successors, (1971), 609 states have call predecessors, (1971), 603 states have return successors, (2163), 1923 states have call predecessors, (2163), 1967 states have call successors, (2163) [2022-12-14 16:01:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10339 transitions. [2022-12-14 16:01:33,940 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10339 transitions. Word has length 320 [2022-12-14 16:01:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:33,941 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 10339 transitions. [2022-12-14 16:01:33,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 16:01:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10339 transitions. [2022-12-14 16:01:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-12-14 16:01:33,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:33,945 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-12-14 16:01:33,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 16:01:33,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash 505677523, now seen corresponding path program 1 times [2022-12-14 16:01:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:33,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888660248] [2022-12-14 16:01:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:33,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2022-12-14 16:01:34,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888660248] [2022-12-14 16:01:34,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888660248] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:01:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444935588] [2022-12-14 16:01:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:34,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:01:34,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:01:34,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:01:34,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 16:01:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:35,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 4089 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:01:35,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:01:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-12-14 16:01:35,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:01:35,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444935588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:35,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:01:35,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 16:01:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855870796] [2022-12-14 16:01:35,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:35,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:35,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:01:35,908 INFO L87 Difference]: Start difference. First operand 7167 states and 10339 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:01:37,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:39,573 WARN L539 Checker$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 16:01:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:41,353 INFO L93 Difference]: Finished difference Result 21287 states and 31339 transitions. [2022-12-14 16:01:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:41,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 349 [2022-12-14 16:01:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:41,396 INFO L225 Difference]: With dead ends: 21287 [2022-12-14 16:01:41,396 INFO L226 Difference]: Without dead ends: 14189 [2022-12-14 16:01:41,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:01:41,415 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1370 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:41,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 2742 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-12-14 16:01:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14189 states. [2022-12-14 16:01:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14189 to 14077. [2022-12-14 16:01:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14077 states, 9050 states have (on average 1.3555801104972376) internal successors, (12268), 9292 states have internal predecessors, (12268), 3851 states have call successors, (3851), 1185 states have call predecessors, (3851), 1175 states have return successors, (4819), 3751 states have call predecessors, (4819), 3847 states have call successors, (4819) [2022-12-14 16:01:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14077 states to 14077 states and 20938 transitions. [2022-12-14 16:01:42,037 INFO L78 Accepts]: Start accepts. Automaton has 14077 states and 20938 transitions. Word has length 349 [2022-12-14 16:01:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:42,037 INFO L495 AbstractCegarLoop]: Abstraction has 14077 states and 20938 transitions. [2022-12-14 16:01:42,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:01:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 14077 states and 20938 transitions. [2022-12-14 16:01:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-12-14 16:01:42,041 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:42,041 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-12-14 16:01:42,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 16:01:42,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:01:42,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1305703798, now seen corresponding path program 1 times [2022-12-14 16:01:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:42,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420902695] [2022-12-14 16:01:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2022-12-14 16:01:43,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:43,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420902695] [2022-12-14 16:01:43,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420902695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:01:43,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793244834] [2022-12-14 16:01:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:43,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:01:43,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:01:43,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:01:43,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 16:01:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:43,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 4091 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:01:44,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:01:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-12-14 16:01:44,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:01:44,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793244834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:44,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:01:44,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 16:01:44,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737357303] [2022-12-14 16:01:44,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:44,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:44,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:44,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:44,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:01:44,045 INFO L87 Difference]: Start difference. First operand 14077 states and 20938 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:01:45,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:48,930 WARN L539 Checker$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 16:01:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:50,693 INFO L93 Difference]: Finished difference Result 28185 states and 41882 transitions. [2022-12-14 16:01:50,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:50,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 350 [2022-12-14 16:01:50,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:50,732 INFO L225 Difference]: With dead ends: 28185 [2022-12-14 16:01:50,732 INFO L226 Difference]: Without dead ends: 14177 [2022-12-14 16:01:50,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:01:50,767 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1368 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:50,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 2740 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-12-14 16:01:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14177 states. [2022-12-14 16:01:51,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 14069. [2022-12-14 16:01:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14069 states, 9046 states have (on average 1.3548529736900288) internal successors, (12256), 9288 states have internal predecessors, (12256), 3843 states have call successors, (3843), 1189 states have call predecessors, (3843), 1179 states have return successors, (4787), 3743 states have call predecessors, (4787), 3839 states have call successors, (4787) [2022-12-14 16:01:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14069 states to 14069 states and 20886 transitions. [2022-12-14 16:01:51,339 INFO L78 Accepts]: Start accepts. Automaton has 14069 states and 20886 transitions. Word has length 350 [2022-12-14 16:01:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:01:51,340 INFO L495 AbstractCegarLoop]: Abstraction has 14069 states and 20886 transitions. [2022-12-14 16:01:51,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:01:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14069 states and 20886 transitions. [2022-12-14 16:01:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-12-14 16:01:51,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:01:51,343 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-12-14 16:01:51,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 16:01:51,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:01:51,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:01:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:01:51,544 INFO L85 PathProgramCache]: Analyzing trace with hash -890965773, now seen corresponding path program 1 times [2022-12-14 16:01:51,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:01:51,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607577365] [2022-12-14 16:01:51,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:51,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:01:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2022-12-14 16:01:52,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:01:52,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607577365] [2022-12-14 16:01:52,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607577365] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:01:52,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261441603] [2022-12-14 16:01:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:01:52,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:01:52,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:01:52,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:01:52,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 16:01:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:01:53,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 4087 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:01:53,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:01:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-12-14 16:01:53,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:01:53,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261441603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:01:53,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:01:53,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 16:01:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893429787] [2022-12-14 16:01:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:01:53,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:01:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:01:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:01:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:01:53,432 INFO L87 Difference]: Start difference. First operand 14069 states and 20886 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:01:55,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:01:58,210 WARN L539 Checker$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 16:01:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:01:59,909 INFO L93 Difference]: Finished difference Result 28166 states and 41778 transitions. [2022-12-14 16:01:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:01:59,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 348 [2022-12-14 16:01:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:01:59,949 INFO L225 Difference]: With dead ends: 28166 [2022-12-14 16:01:59,949 INFO L226 Difference]: Without dead ends: 14166 [2022-12-14 16:01:59,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:01:59,994 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 1279 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 16:01:59,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2829 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 338 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 16:02:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14166 states. [2022-12-14 16:02:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14166 to 14058. [2022-12-14 16:02:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14058 states, 9041 states have (on average 1.3542749695830107) internal successors, (12244), 9283 states have internal predecessors, (12244), 3835 states have call successors, (3835), 1191 states have call predecessors, (3835), 1181 states have return successors, (4755), 3735 states have call predecessors, (4755), 3831 states have call successors, (4755) [2022-12-14 16:02:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14058 states to 14058 states and 20834 transitions. [2022-12-14 16:02:00,565 INFO L78 Accepts]: Start accepts. Automaton has 14058 states and 20834 transitions. Word has length 348 [2022-12-14 16:02:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:02:00,565 INFO L495 AbstractCegarLoop]: Abstraction has 14058 states and 20834 transitions. [2022-12-14 16:02:00,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:02:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 14058 states and 20834 transitions. [2022-12-14 16:02:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-12-14 16:02:00,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:00,569 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-12-14 16:02:00,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 16:02:00,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:02:00,770 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash -174336420, now seen corresponding path program 1 times [2022-12-14 16:02:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:02:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122488420] [2022-12-14 16:02:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:02:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2022-12-14 16:02:01,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:02:01,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122488420] [2022-12-14 16:02:01,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122488420] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:02:01,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128319838] [2022-12-14 16:02:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:01,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:02:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:02:01,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:02:01,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 16:02:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:02,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 4085 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 16:02:02,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:02:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-12-14 16:02:02,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:02:02,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128319838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:02,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:02:02,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 16:02:02,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676788053] [2022-12-14 16:02:02,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:02:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:02:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:02:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:02:02,570 INFO L87 Difference]: Start difference. First operand 14058 states and 20834 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:02:05,195 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 16:02:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:02:07,453 INFO L93 Difference]: Finished difference Result 28134 states and 41666 transitions. [2022-12-14 16:02:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:02:07,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 347 [2022-12-14 16:02:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:02:07,491 INFO L225 Difference]: With dead ends: 28134 [2022-12-14 16:02:07,491 INFO L226 Difference]: Without dead ends: 14150 [2022-12-14 16:02:07,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 16:02:07,519 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1360 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 16:02:07,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 2899 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 16:02:07,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2022-12-14 16:02:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 14042. [2022-12-14 16:02:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14042 states, 9033 states have (on average 1.353703088674859) internal successors, (12228), 9275 states have internal predecessors, (12228), 3827 states have call successors, (3827), 1191 states have call predecessors, (3827), 1181 states have return successors, (4723), 3727 states have call predecessors, (4723), 3823 states have call successors, (4723) [2022-12-14 16:02:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14042 states to 14042 states and 20778 transitions. [2022-12-14 16:02:08,112 INFO L78 Accepts]: Start accepts. Automaton has 14042 states and 20778 transitions. Word has length 347 [2022-12-14 16:02:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:02:08,112 INFO L495 AbstractCegarLoop]: Abstraction has 14042 states and 20778 transitions. [2022-12-14 16:02:08,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-14 16:02:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 14042 states and 20778 transitions. [2022-12-14 16:02:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-12-14 16:02:08,117 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:08,117 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:02:08,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 16:02:08,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:02:08,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -134616344, now seen corresponding path program 1 times [2022-12-14 16:02:08,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:02:08,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856191074] [2022-12-14 16:02:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:08,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:02:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1508 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1508 trivial. 0 not checked. [2022-12-14 16:02:09,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:02:09,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856191074] [2022-12-14 16:02:09,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856191074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:09,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:02:09,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 16:02:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798759653] [2022-12-14 16:02:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 16:02:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:02:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 16:02:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 16:02:09,037 INFO L87 Difference]: Start difference. First operand 14042 states and 20778 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-12-14 16:02:11,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:13,389 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 16:02:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:02:16,514 INFO L93 Difference]: Finished difference Result 27244 states and 40467 transitions. [2022-12-14 16:02:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 16:02:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 376 [2022-12-14 16:02:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:02:16,552 INFO L225 Difference]: With dead ends: 27244 [2022-12-14 16:02:16,552 INFO L226 Difference]: Without dead ends: 13276 [2022-12-14 16:02:16,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 16:02:16,582 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 21 mSDsluCounter, 5952 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7157 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-14 16:02:16,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 7157 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1077 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-12-14 16:02:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13276 states. [2022-12-14 16:02:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13276 to 13276. [2022-12-14 16:02:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13276 states, 8593 states have (on average 1.3448155475386943) internal successors, (11556), 8747 states have internal predecessors, (11556), 3533 states have call successors, (3533), 1157 states have call predecessors, (3533), 1149 states have return successors, (3821), 3499 states have call predecessors, (3821), 3529 states have call successors, (3821) [2022-12-14 16:02:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 18910 transitions. [2022-12-14 16:02:17,097 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 18910 transitions. Word has length 376 [2022-12-14 16:02:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:02:17,097 INFO L495 AbstractCegarLoop]: Abstraction has 13276 states and 18910 transitions. [2022-12-14 16:02:17,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 4 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-12-14 16:02:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 18910 transitions. [2022-12-14 16:02:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-12-14 16:02:17,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:17,103 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2022-12-14 16:02:17,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 16:02:17,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:17,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash -435345629, now seen corresponding path program 1 times [2022-12-14 16:02:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:02:17,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902057210] [2022-12-14 16:02:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:02:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2044 trivial. 0 not checked. [2022-12-14 16:02:17,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:02:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902057210] [2022-12-14 16:02:17,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902057210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:17,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:02:17,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:02:17,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168700461] [2022-12-14 16:02:17,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:17,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:02:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:02:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:02:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:02:17,464 INFO L87 Difference]: Start difference. First operand 13276 states and 18910 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-12-14 16:02:19,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:21,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:22,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:26,015 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 16:02:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:02:27,690 INFO L93 Difference]: Finished difference Result 32796 states and 46710 transitions. [2022-12-14 16:02:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:02:27,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 393 [2022-12-14 16:02:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:02:27,741 INFO L225 Difference]: With dead ends: 32796 [2022-12-14 16:02:27,741 INFO L226 Difference]: Without dead ends: 19594 [2022-12-14 16:02:27,764 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 16:02:27,764 INFO L413 NwaCegarLoop]: 2297 mSDtfsCounter, 1240 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-14 16:02:27,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 3497 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 488 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-12-14 16:02:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19594 states. [2022-12-14 16:02:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19594 to 19582. [2022-12-14 16:02:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19582 states, 12681 states have (on average 1.3443734721236495) internal successors, (17048), 12907 states have internal predecessors, (17048), 5195 states have call successors, (5195), 1715 states have call predecessors, (5195), 1705 states have return successors, (5623), 5147 states have call predecessors, (5623), 5191 states have call successors, (5623) [2022-12-14 16:02:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19582 states to 19582 states and 27866 transitions. [2022-12-14 16:02:28,546 INFO L78 Accepts]: Start accepts. Automaton has 19582 states and 27866 transitions. Word has length 393 [2022-12-14 16:02:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:02:28,546 INFO L495 AbstractCegarLoop]: Abstraction has 19582 states and 27866 transitions. [2022-12-14 16:02:28,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-12-14 16:02:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19582 states and 27866 transitions. [2022-12-14 16:02:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-12-14 16:02:28,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:28,553 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:02:28,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 16:02:28,553 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2024479644, now seen corresponding path program 1 times [2022-12-14 16:02:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:02:28,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164796178] [2022-12-14 16:02:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:02:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1508 trivial. 0 not checked. [2022-12-14 16:02:28,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:02:28,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164796178] [2022-12-14 16:02:28,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164796178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:28,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:02:28,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:02:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638806341] [2022-12-14 16:02:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:02:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:02:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:02:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:02:28,812 INFO L87 Difference]: Start difference. First operand 19582 states and 27866 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-12-14 16:02:31,668 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 16:02:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:02:34,377 INFO L93 Difference]: Finished difference Result 52650 states and 74358 transitions. [2022-12-14 16:02:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:02:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 398 [2022-12-14 16:02:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:02:34,471 INFO L225 Difference]: With dead ends: 52650 [2022-12-14 16:02:34,471 INFO L226 Difference]: Without dead ends: 33142 [2022-12-14 16:02:34,511 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 16:02:34,512 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 1113 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 16:02:34,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 2632 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 422 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 16:02:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33142 states. [2022-12-14 16:02:35,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33142 to 33118. [2022-12-14 16:02:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33118 states, 21357 states have (on average 1.3325841644425716) internal successors, (28460), 21803 states have internal predecessors, (28460), 8771 states have call successors, (8771), 3007 states have call predecessors, (8771), 2989 states have return successors, (9315), 8675 states have call predecessors, (9315), 8767 states have call successors, (9315) [2022-12-14 16:02:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33118 states to 33118 states and 46546 transitions. [2022-12-14 16:02:35,952 INFO L78 Accepts]: Start accepts. Automaton has 33118 states and 46546 transitions. Word has length 398 [2022-12-14 16:02:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:02:35,953 INFO L495 AbstractCegarLoop]: Abstraction has 33118 states and 46546 transitions. [2022-12-14 16:02:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-12-14 16:02:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 33118 states and 46546 transitions. [2022-12-14 16:02:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-12-14 16:02:35,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:35,964 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:02:35,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 16:02:35,964 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash 641833848, now seen corresponding path program 1 times [2022-12-14 16:02:35,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:02:35,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412839488] [2022-12-14 16:02:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:35,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:02:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1508 trivial. 0 not checked. [2022-12-14 16:02:36,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:02:36,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412839488] [2022-12-14 16:02:36,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412839488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:36,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:02:36,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:02:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627174526] [2022-12-14 16:02:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:36,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:02:36,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:02:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:02:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:02:36,289 INFO L87 Difference]: Start difference. First operand 33118 states and 46546 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-12-14 16:02:38,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:41,217 WARN L539 Checker$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 16:02:43,442 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 16:02:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:02:47,004 INFO L93 Difference]: Finished difference Result 92670 states and 130026 transitions. [2022-12-14 16:02:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:02:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 406 [2022-12-14 16:02:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:02:47,175 INFO L225 Difference]: With dead ends: 92670 [2022-12-14 16:02:47,175 INFO L226 Difference]: Without dead ends: 59626 [2022-12-14 16:02:47,246 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 16:02:47,247 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 1090 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:02:47,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 3112 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 428 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2022-12-14 16:02:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59626 states. [2022-12-14 16:02:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59626 to 59590. [2022-12-14 16:02:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59590 states, 38865 states have (on average 1.3359063424675157) internal successors, (51920), 39511 states have internal predecessors, (51920), 15255 states have call successors, (15255), 5503 states have call predecessors, (15255), 5469 states have return successors, (16323), 15143 states have call predecessors, (16323), 15251 states have call successors, (16323) [2022-12-14 16:02:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59590 states to 59590 states and 83498 transitions. [2022-12-14 16:02:49,983 INFO L78 Accepts]: Start accepts. Automaton has 59590 states and 83498 transitions. Word has length 406 [2022-12-14 16:02:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:02:49,983 INFO L495 AbstractCegarLoop]: Abstraction has 59590 states and 83498 transitions. [2022-12-14 16:02:49,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-12-14 16:02:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 59590 states and 83498 transitions. [2022-12-14 16:02:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-12-14 16:02:49,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:49,995 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 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] [2022-12-14 16:02:49,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 16:02:49,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:49,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1607200297, now seen corresponding path program 1 times [2022-12-14 16:02:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:02:49,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283555086] [2022-12-14 16:02:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:02:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2064 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1989 trivial. 0 not checked. [2022-12-14 16:02:50,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:02:50,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283555086] [2022-12-14 16:02:50,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283555086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:02:50,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296624145] [2022-12-14 16:02:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:50,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:02:50,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:02:50,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:02:50,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 16:02:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:52,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 4184 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 16:02:52,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:02:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2064 backedges. 763 proven. 0 refuted. 0 times theorem prover too weak. 1301 trivial. 0 not checked. [2022-12-14 16:02:52,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:02:52,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296624145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:52,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 16:02:52,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-12-14 16:02:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277415219] [2022-12-14 16:02:52,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:52,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 16:02:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:02:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 16:02:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 16:02:52,153 INFO L87 Difference]: Start difference. First operand 59590 states and 83498 transitions. Second operand has 6 states, 4 states have (on average 24.25) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-12-14 16:02:54,892 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 16:02:56,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:58,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:03:01,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:03:05,250 WARN L539 Checker$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 16:03:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:03:10,491 INFO L93 Difference]: Finished difference Result 119308 states and 167816 transitions. [2022-12-14 16:03:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 16:03:10,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 24.25) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 406 [2022-12-14 16:03:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:03:10,681 INFO L225 Difference]: With dead ends: 119308 [2022-12-14 16:03:10,681 INFO L226 Difference]: Without dead ends: 59751 [2022-12-14 16:03:10,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 16:03:10,821 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 3 mSDsluCounter, 4759 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:03:10,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5959 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 948 Invalid, 4 Unknown, 0 Unchecked, 15.7s Time] [2022-12-14 16:03:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59751 states. [2022-12-14 16:03:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59751 to 59719. [2022-12-14 16:03:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59719 states, 38930 states have (on average 1.3369894682763934) internal successors, (52049), 39640 states have internal predecessors, (52049), 15255 states have call successors, (15255), 5503 states have call predecessors, (15255), 5533 states have return successors, (16387), 15143 states have call predecessors, (16387), 15251 states have call successors, (16387) [2022-12-14 16:03:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59719 states to 59719 states and 83691 transitions. [2022-12-14 16:03:13,381 INFO L78 Accepts]: Start accepts. Automaton has 59719 states and 83691 transitions. Word has length 406 [2022-12-14 16:03:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:03:13,381 INFO L495 AbstractCegarLoop]: Abstraction has 59719 states and 83691 transitions. [2022-12-14 16:03:13,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 24.25) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-12-14 16:03:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 59719 states and 83691 transitions. [2022-12-14 16:03:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-12-14 16:03:13,394 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:03:13,394 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 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] [2022-12-14 16:03:13,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 16:03:13,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 16:03:13,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:03:13,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:03:13,597 INFO L85 PathProgramCache]: Analyzing trace with hash 209185769, now seen corresponding path program 1 times [2022-12-14 16:03:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:03:13,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252183275] [2022-12-14 16:03:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:03:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:03:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:03:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2319 trivial. 0 not checked. [2022-12-14 16:03:14,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:03:14,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252183275] [2022-12-14 16:03:14,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252183275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 16:03:14,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729132866] [2022-12-14 16:03:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:03:14,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:03:14,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:03:14,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:03:14,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50c17b2-1023-419a-a500-87d4e993b1d7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 16:03:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:03:16,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 4424 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-14 16:03:16,263 INFO L286 TraceCheckSpWp]: Computing forward predicates...