./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-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:45:43,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:45:43,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:45:43,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:45:43,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:45:43,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:45:43,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:45:43,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:45:43,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:45:43,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:45:43,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:45:43,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:45:43,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:45:43,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:45:43,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:45:43,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:45:43,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:45:43,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:45:43,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:45:43,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:45:43,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:45:43,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:45:43,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:45:43,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:45:43,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:45:43,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:45:43,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:45:43,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:45:43,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:45:43,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:45:43,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:45:43,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:45:43,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:45:43,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:45:43,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:45:43,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:45:43,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:45:43,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:45:43,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:45:43,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:45:43,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:45:43,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 15:45:43,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:45:43,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:45:43,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:45:43,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:45:43,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:45:43,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:45:43,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:45:43,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:45:43,407 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:45:43,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:45:43,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:45:43,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:45:43,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:45:43,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:45:43,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:45:43,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:45:43,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:45:43,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:45:43,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:45:43,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:45:43,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:45:43,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:45:43,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:45:43,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:45:43,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:45:43,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:45:43,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:45:43,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:45:43,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:45:43,414 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:45:43,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:45:43,414 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2022-11-25 15:45:43,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:45:43,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:45:43,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:45:43,744 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:45:43,745 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:45:43,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2022-11-25 15:45:46,794 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:45:47,301 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:45:47,301 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2022-11-25 15:45:47,334 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/data/99f93e1a1/db97fc21ed194eb6b1beb49aeb233186/FLAGaaecb05d8 [2022-11-25 15:45:47,355 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/data/99f93e1a1/db97fc21ed194eb6b1beb49aeb233186 [2022-11-25 15:45:47,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:45:47,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:45:47,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:45:47,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:45:47,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:45:47,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:45:47" (1/1) ... [2022-11-25 15:45:47,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1623d965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:47, skipping insertion in model container [2022-11-25 15:45:47,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:45:47" (1/1) ... [2022-11-25 15:45:47,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:45:47,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:45:48,126 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:45:48,156 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 15:45:48,351 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-11-25 15:45:48,355 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 15:45:48,356 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-11-25 15:45:48,503 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 15:45:48,519 WARN L623 FunctionHandler]: Unknown extern function tty_unregister_ldisc [2022-11-25 15:45:48,520 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:48,525 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:48,526 WARN L623 FunctionHandler]: Unknown extern function tty_register_ldisc [2022-11-25 15:45:48,527 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:48,535 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 15:45:48,538 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,563 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,565 WARN L623 FunctionHandler]: Unknown extern function tty_put_char [2022-11-25 15:45:48,595 WARN L623 FunctionHandler]: Unknown extern function tty_write_room [2022-11-25 15:45:48,619 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 15:45:48,677 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,678 WARN L623 FunctionHandler]: Unknown extern function put_pid [2022-11-25 15:45:48,679 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,681 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:45:48,698 WARN L623 FunctionHandler]: Unknown extern function kill_pid [2022-11-25 15:45:48,709 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:48,710 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:48,711 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,712 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:48,713 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,714 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,714 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:45:48,715 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 15:45:48,719 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,720 WARN L623 FunctionHandler]: Unknown extern function put_pid [2022-11-25 15:45:48,721 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,722 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,723 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 15:45:48,724 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,724 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,725 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,726 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:45:48,729 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-11-25 15:45:48,730 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:45:48,730 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-25 15:45:48,731 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:45:48,731 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-11-25 15:45:48,733 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:48,734 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:45:48,737 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:48,738 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:45:48,740 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:45:48,781 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 15:45:48,800 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 15:45:48,808 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,809 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,812 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,813 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,814 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 15:45:48,815 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,816 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,818 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,819 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,821 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:48,821 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 15:45:48,826 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2022-11-25 15:45:48,856 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-11-25 15:45:48,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:45:48,911 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:45:49,052 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:45:49,054 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 15:45:49,057 WARN L623 FunctionHandler]: Unknown extern function __might_fault [2022-11-25 15:45:49,058 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 15:45:49,059 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-11-25 15:45:49,071 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 15:45:49,079 WARN L623 FunctionHandler]: Unknown extern function tty_unregister_ldisc [2022-11-25 15:45:49,081 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:49,082 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:49,082 WARN L623 FunctionHandler]: Unknown extern function tty_register_ldisc [2022-11-25 15:45:49,083 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:49,090 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 15:45:49,092 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,096 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,097 WARN L623 FunctionHandler]: Unknown extern function tty_put_char [2022-11-25 15:45:49,108 WARN L623 FunctionHandler]: Unknown extern function tty_write_room [2022-11-25 15:45:49,118 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 15:45:49,144 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,144 WARN L623 FunctionHandler]: Unknown extern function put_pid [2022-11-25 15:45:49,149 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,151 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:45:49,161 WARN L623 FunctionHandler]: Unknown extern function kill_pid [2022-11-25 15:45:49,165 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:49,167 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:49,170 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,171 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:49,172 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,172 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,174 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:45:49,175 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 15:45:49,177 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,180 WARN L623 FunctionHandler]: Unknown extern function put_pid [2022-11-25 15:45:49,181 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,182 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,183 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 15:45:49,185 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,185 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,186 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,187 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:45:49,195 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-11-25 15:45:49,196 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:45:49,196 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-25 15:45:49,197 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:45:49,197 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-11-25 15:45:49,198 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 15:45:49,199 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:45:49,201 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:45:49,202 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 15:45:49,205 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 15:45:49,229 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 15:45:49,239 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 15:45:49,242 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,242 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,243 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,244 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,244 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 15:45:49,246 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,246 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,247 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,247 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,248 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 15:45:49,249 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 15:45:49,250 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2022-11-25 15:45:49,261 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-11-25 15:45:49,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:45:49,342 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:45:49,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49 WrapperNode [2022-11-25 15:45:49,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:45:49,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:45:49,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:45:49,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:45:49,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,537 INFO L138 Inliner]: procedures = 142, calls = 664, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1986 [2022-11-25 15:45:49,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:45:49,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:45:49,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:45:49,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:45:49,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:45:49,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:45:49,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:45:49,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:45:49,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:45:49,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:45:49,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:45:49,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6665fbd-9128-4389-a6af-62cd04e388de/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:45:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-25 15:45:49,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-25 15:45:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 15:45:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-25 15:45:49,838 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-25 15:45:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 15:45:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 15:45:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 15:45:49,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 15:45:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:45:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-25 15:45:49,844 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-25 15:45:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-25 15:45:49,844 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-25 15:45:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure retry_transmit [2022-11-25 15:45:49,845 INFO L138 BoogieDeclarations]: Found implementation of procedure retry_transmit [2022-11-25 15:45:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 15:45:49,845 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 15:45:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-25 15:45:49,845 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-25 15:45:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-25 15:45:49,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-25 15:45:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 15:45:49,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 15:45:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_close [2022-11-25 15:45:49,846 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_close [2022-11-25 15:45:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure remove_msg [2022-11-25 15:45:49,846 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_msg [2022-11-25 15:45:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-25 15:45:49,846 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-25 15:45:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure task_pid [2022-11-25 15:45:49,848 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pid [2022-11-25 15:45:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 15:45:49,849 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 15:45:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2022-11-25 15:45:49,849 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2022-11-25 15:45:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:45:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-25 15:45:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-25 15:45:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-25 15:45:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-25 15:45:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-25 15:45:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-25 15:45:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 15:45:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 15:45:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure add_msg [2022-11-25 15:45:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure add_msg [2022-11-25 15:45:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:45:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-25 15:45:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-25 15:45:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-25 15:45:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-25 15:45:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-25 15:45:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-25 15:45:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_poll [2022-11-25 15:45:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_poll [2022-11-25 15:45:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:45:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-25 15:45:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-25 15:45:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-25 15:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure findClient [2022-11-25 15:45:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure findClient [2022-11-25 15:45:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2022-11-25 15:45:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2022-11-25 15:45:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 15:45:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-25 15:45:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-25 15:45:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-25 15:45:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-25 15:45:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-25 15:45:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-25 15:45:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure remove_client_block [2022-11-25 15:45:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_client_block [2022-11-25 15:45:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-25 15:45:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-25 15:45:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:45:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 15:45:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure on_receive_block [2022-11-25 15:45:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure on_receive_block [2022-11-25 15:45:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure flush [2022-11-25 15:45:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure flush [2022-11-25 15:45:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_set_termios [2022-11-25 15:45:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_set_termios [2022-11-25 15:45:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-25 15:45:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-25 15:45:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_ioctl [2022-11-25 15:45:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_ioctl [2022-11-25 15:45:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure remove_from_tx_queue [2022-11-25 15:45:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_from_tx_queue [2022-11-25 15:45:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:45:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2022-11-25 15:45:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2022-11-25 15:45:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2022-11-25 15:45:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2022-11-25 15:45:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 15:45:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:45:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:45:50,379 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:45:50,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:45:50,599 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 15:45:54,500 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:45:54,528 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:45:54,528 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:45:54,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:45:54 BoogieIcfgContainer [2022-11-25 15:45:54,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:45:54,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:45:54,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:45:54,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:45:54,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:45:47" (1/3) ... [2022-11-25 15:45:54,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541a1ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:45:54, skipping insertion in model container [2022-11-25 15:45:54,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (2/3) ... [2022-11-25 15:45:54,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541a1ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:45:54, skipping insertion in model container [2022-11-25 15:45:54,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:45:54" (3/3) ... [2022-11-25 15:45:54,553 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2022-11-25 15:45:54,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:45:54,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:45:54,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:45:54,689 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=PETRI_NET, 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;@54fc202e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:45:54,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:45:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 752 states, 525 states have (on average 1.3923809523809523) internal successors, (731), 561 states have internal predecessors, (731), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) [2022-11-25 15:45:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-25 15:45:54,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:54,741 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:54,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:45:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash -230321465, now seen corresponding path program 1 times [2022-11-25 15:45:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:54,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388108217] [2022-11-25 15:45:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:54,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:45:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:45:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:45:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:45:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:45:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:45:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:45:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:45:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:45:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:45:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:45:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:45:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:45:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:45:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:45:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:45:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:45:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:45:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:45:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:45:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:45:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:45:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:45:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:45:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:45:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:45:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:45:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-25 15:45:55,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:55,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388108217] [2022-11-25 15:45:55,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388108217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:45:55,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:45:55,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:45:55,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274395887] [2022-11-25 15:45:55,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:45:55,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:45:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:55,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:45:55,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:45:55,844 INFO L87 Difference]: Start difference. First operand has 752 states, 525 states have (on average 1.3923809523809523) internal successors, (731), 561 states have internal predecessors, (731), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:46:02,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:04,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:06,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:07,210 INFO L93 Difference]: Finished difference Result 2116 states and 3226 transitions. [2022-11-25 15:46:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:46:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 173 [2022-11-25 15:46:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:07,248 INFO L225 Difference]: With dead ends: 2116 [2022-11-25 15:46:07,249 INFO L226 Difference]: Without dead ends: 1342 [2022-11-25 15:46:07,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:46:07,314 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 1429 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 947 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 947 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:07,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 2934 Invalid, 3803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [947 Valid, 2854 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-25 15:46:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-25 15:46:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1021. [2022-11-25 15:46:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 711 states have (on average 1.379746835443038) internal successors, (981), 758 states have internal predecessors, (981), 245 states have call successors, (245), 65 states have call predecessors, (245), 64 states have return successors, (244), 229 states have call predecessors, (244), 244 states have call successors, (244) [2022-11-25 15:46:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1470 transitions. [2022-11-25 15:46:07,526 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1470 transitions. Word has length 173 [2022-11-25 15:46:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:07,527 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1470 transitions. [2022-11-25 15:46:07,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:46:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1470 transitions. [2022-11-25 15:46:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-25 15:46:07,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:07,534 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:46:07,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:07,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1385990260, now seen corresponding path program 1 times [2022-11-25 15:46:07,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:07,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294061695] [2022-11-25 15:46:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:46:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:46:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:46:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:46:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:46:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:46:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:46:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:46:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:46:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:46:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:46:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:46:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:46:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:46:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:46:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-25 15:46:08,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:08,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294061695] [2022-11-25 15:46:08,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294061695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:08,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:08,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:46:08,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340311884] [2022-11-25 15:46:08,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:08,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:46:08,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:46:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:46:08,211 INFO L87 Difference]: Start difference. First operand 1021 states and 1470 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:46:21,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:23,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:25,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:30,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:32,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:33,394 INFO L93 Difference]: Finished difference Result 6135 states and 9736 transitions. [2022-11-25 15:46:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:46:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 183 [2022-11-25 15:46:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:33,445 INFO L225 Difference]: With dead ends: 6135 [2022-11-25 15:46:33,446 INFO L226 Difference]: Without dead ends: 5163 [2022-11-25 15:46:33,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:46:33,459 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 5123 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 7258 mSolverCounterSat, 3053 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5462 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 10316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3053 IncrementalHoareTripleChecker+Valid, 7258 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:33,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5462 Valid, 5257 Invalid, 10316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3053 Valid, 7258 Invalid, 5 Unknown, 0 Unchecked, 24.2s Time] [2022-11-25 15:46:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2022-11-25 15:46:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 3965. [2022-11-25 15:46:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 2774 states have (on average 1.3781542898341745) internal successors, (3823), 2955 states have internal predecessors, (3823), 929 states have call successors, (929), 246 states have call predecessors, (929), 261 states have return successors, (1209), 887 states have call predecessors, (1209), 928 states have call successors, (1209) [2022-11-25 15:46:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5961 transitions. [2022-11-25 15:46:33,895 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5961 transitions. Word has length 183 [2022-11-25 15:46:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:33,901 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 5961 transitions. [2022-11-25 15:46:33,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:46:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5961 transitions. [2022-11-25 15:46:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-25 15:46:33,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:33,911 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:33,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:46:33,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash -956220976, now seen corresponding path program 1 times [2022-11-25 15:46:33,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:33,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108983162] [2022-11-25 15:46:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:46:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:46:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:46:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:46:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:46:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:46:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:46:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:46:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:46:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:46:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:46:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:46:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:46:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:46:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:46:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:46:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:46:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-25 15:46:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:34,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108983162] [2022-11-25 15:46:34,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108983162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:34,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:34,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:46:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589942270] [2022-11-25 15:46:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:34,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:46:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:46:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:46:34,487 INFO L87 Difference]: Start difference. First operand 3965 states and 5961 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:46:46,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:48,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:52,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:54,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:56,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:58,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:46:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:59,105 INFO L93 Difference]: Finished difference Result 24281 states and 40750 transitions. [2022-11-25 15:46:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:46:59,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2022-11-25 15:46:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:59,383 INFO L225 Difference]: With dead ends: 24281 [2022-11-25 15:46:59,383 INFO L226 Difference]: Without dead ends: 20365 [2022-11-25 15:46:59,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:46:59,424 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 5642 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 6029 mSolverCounterSat, 3254 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5984 SdHoareTripleChecker+Valid, 4826 SdHoareTripleChecker+Invalid, 9289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3254 IncrementalHoareTripleChecker+Valid, 6029 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:59,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5984 Valid, 4826 Invalid, 9289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3254 Valid, 6029 Invalid, 6 Unknown, 0 Unchecked, 22.9s Time] [2022-11-25 15:46:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20365 states. [2022-11-25 15:47:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20365 to 15914. [2022-11-25 15:47:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15914 states, 11137 states have (on average 1.3710155338062315) internal successors, (15269), 11839 states have internal predecessors, (15269), 3695 states have call successors, (3695), 972 states have call predecessors, (3695), 1081 states have return successors, (6352), 3592 states have call predecessors, (6352), 3694 states have call successors, (6352) [2022-11-25 15:47:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15914 states to 15914 states and 25316 transitions. [2022-11-25 15:47:01,048 INFO L78 Accepts]: Start accepts. Automaton has 15914 states and 25316 transitions. Word has length 184 [2022-11-25 15:47:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:01,050 INFO L495 AbstractCegarLoop]: Abstraction has 15914 states and 25316 transitions. [2022-11-25 15:47:01,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:47:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 15914 states and 25316 transitions. [2022-11-25 15:47:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-25 15:47:01,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:01,055 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:01,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:47:01,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2032543956, now seen corresponding path program 1 times [2022-11-25 15:47:01,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:01,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362691693] [2022-11-25 15:47:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:47:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:47:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:47:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:47:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:47:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:47:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:47:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:47:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:47:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:47:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:47:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:47:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:47:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:47:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:47:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-25 15:47:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:01,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362691693] [2022-11-25 15:47:01,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362691693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:01,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:01,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:47:01,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501973439] [2022-11-25 15:47:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:01,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:47:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:01,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:47:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:47:01,589 INFO L87 Difference]: Start difference. First operand 15914 states and 25316 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:47:14,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:47:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:16,914 INFO L93 Difference]: Finished difference Result 96962 states and 173609 transitions. [2022-11-25 15:47:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:47:16,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2022-11-25 15:47:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:17,934 INFO L225 Difference]: With dead ends: 96962 [2022-11-25 15:47:17,934 INFO L226 Difference]: Without dead ends: 81097 [2022-11-25 15:47:18,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:47:18,126 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 6285 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 4974 mSolverCounterSat, 3910 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6629 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 8885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3910 IncrementalHoareTripleChecker+Valid, 4974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:18,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6629 Valid, 4399 Invalid, 8885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3910 Valid, 4974 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-25 15:47:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81097 states. [2022-11-25 15:47:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81097 to 64290. [2022-11-25 15:47:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64290 states, 44988 states have (on average 1.3638525829109984) internal successors, (61357), 47716 states have internal predecessors, (61357), 14832 states have call successors, (14832), 3876 states have call predecessors, (14832), 4469 states have return successors, (33531), 14653 states have call predecessors, (33531), 14831 states have call successors, (33531) [2022-11-25 15:47:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64290 states to 64290 states and 109720 transitions. [2022-11-25 15:47:24,930 INFO L78 Accepts]: Start accepts. Automaton has 64290 states and 109720 transitions. Word has length 185 [2022-11-25 15:47:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:24,931 INFO L495 AbstractCegarLoop]: Abstraction has 64290 states and 109720 transitions. [2022-11-25 15:47:24,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:47:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 64290 states and 109720 transitions. [2022-11-25 15:47:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-25 15:47:24,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:24,934 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:24,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:47:24,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:47:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1773930632, now seen corresponding path program 1 times [2022-11-25 15:47:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:24,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518520645] [2022-11-25 15:47:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:47:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:47:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:47:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:47:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:47:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:47:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:47:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:47:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:47:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:47:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:47:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:47:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:47:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:47:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:47:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:47:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:47:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-25 15:47:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518520645] [2022-11-25 15:47:25,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518520645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:25,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:25,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:47:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441878107] [2022-11-25 15:47:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:47:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:47:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:47:25,619 INFO L87 Difference]: Start difference. First operand 64290 states and 109720 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 15:47:47,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:47:49,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:47:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:59,034 INFO L93 Difference]: Finished difference Result 380736 states and 725060 transitions. [2022-11-25 15:47:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:47:59,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 186 [2022-11-25 15:47:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:02,227 INFO L225 Difference]: With dead ends: 380736 [2022-11-25 15:48:02,227 INFO L226 Difference]: Without dead ends: 316495 [2022-11-25 15:48:02,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:48:02,741 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 5213 mSDsluCounter, 3550 mSDsCounter, 0 mSdLazyCounter, 6136 mSolverCounterSat, 2731 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5557 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 8869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2731 IncrementalHoareTripleChecker+Valid, 6136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:02,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5557 Valid, 4801 Invalid, 8869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2731 Valid, 6136 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-11-25 15:48:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316495 states.