./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.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_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/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_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/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_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- 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 15:50:59,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:50:59,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:50:59,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:50:59,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:50:59,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:50:59,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:50:59,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:50:59,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:50:59,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:50:59,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:50:59,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:50:59,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:50:59,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:50:59,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:50:59,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:50:59,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:50:59,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:50:59,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:50:59,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:50:59,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:50:59,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:50:59,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:50:59,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:50:59,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:50:59,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:50:59,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:50:59,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:50:59,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:50:59,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:50:59,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:50:59,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:50:59,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:50:59,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:50:59,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:50:59,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:50:59,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:50:59,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:50:59,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:50:59,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:50:59,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:50:59,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 15:50:59,682 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:50:59,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:50:59,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:50:59,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:50:59,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:50:59,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:50:59,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:50:59,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:50:59,686 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:50:59,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:50:59,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:50:59,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:50:59,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:50:59,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:50:59,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:50:59,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:50:59,689 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:50:59,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:50:59,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:50:59,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:50:59,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:50:59,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:50:59,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:50:59,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:50:59,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:50:59,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:50:59,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:50:59,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:50:59,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:50:59,692 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:50:59,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:50:59,692 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_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2022-11-25 15:51:00,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:51:00,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:51:00,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:51:00,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:51:00,085 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:51:00,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-25 15:51:03,255 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:51:03,847 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:51:03,848 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-25 15:51:03,894 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/data/d1b809300/ee1835a3cd6942ab94152983c6ebe3f3/FLAG2045dc625 [2022-11-25 15:51:03,913 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/data/d1b809300/ee1835a3cd6942ab94152983c6ebe3f3 [2022-11-25 15:51:03,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:51:03,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:51:03,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:03,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:51:03,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:51:03,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:03" (1/1) ... [2022-11-25 15:51:03,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3354557d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:03, skipping insertion in model container [2022-11-25 15:51:03,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:03" (1/1) ... [2022-11-25 15:51:03,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:51:04,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:51:04,574 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 15:51:04,579 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 15:51:04,583 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 15:51:04,602 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:04,609 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:04,612 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:04,616 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:04,617 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-11-25 15:51:04,643 WARN L623 FunctionHandler]: Unknown extern function __alloc_pages_nodemask [2022-11-25 15:51:04,815 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 15:51:04,845 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 15:51:04,846 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 15:51:04,853 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 15:51:04,855 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:51:04,890 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-11-25 15:51:04,891 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 15:51:04,897 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:04,899 WARN L623 FunctionHandler]: Unknown extern function dev_kfree_skb_any [2022-11-25 15:51:04,907 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:04,908 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 15:51:04,909 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 15:51:04,911 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-11-25 15:51:04,913 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 15:51:04,914 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 15:51:04,914 WARN L623 FunctionHandler]: Unknown extern function skb_add_rx_frag [2022-11-25 15:51:04,916 WARN L623 FunctionHandler]: Unknown extern function skb_add_rx_frag [2022-11-25 15:51:04,918 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 15:51:04,921 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:04,923 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 15:51:04,930 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 15:51:04,935 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 15:51:04,936 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 15:51:04,969 WARN L623 FunctionHandler]: Unknown extern function usb_ifnum_to_if [2022-11-25 15:51:04,972 WARN L623 FunctionHandler]: Unknown extern function alloc_netdev_mqs [2022-11-25 15:51:04,974 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:51:04,975 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:51:04,979 WARN L623 FunctionHandler]: Unknown extern function usb_driver_claim_interface [2022-11-25 15:51:04,979 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 15:51:04,980 WARN L623 FunctionHandler]: Unknown extern function usb_driver_release_interface [2022-11-25 15:51:04,982 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:04,987 WARN L623 FunctionHandler]: Unknown extern function usb_driver_release_interface [2022-11-25 15:51:05,023 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 15:51:05,043 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_2 [2022-11-25 15:51:05,046 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_2 [2022-11-25 15:51:05,051 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-25 15:51:05,054 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 15:51:05,055 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 15:51:05,056 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 15:51:05,057 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 15:51:05,062 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_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-25 15:51:05,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:05,159 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:51:05,313 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 15:51:05,314 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 15:51:05,315 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-25 15:51:05,317 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:05,318 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:05,319 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:05,319 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 15:51:05,320 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-11-25 15:51:05,323 WARN L623 FunctionHandler]: Unknown extern function __alloc_pages_nodemask [2022-11-25 15:51:05,354 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 15:51:05,357 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 15:51:05,358 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 15:51:05,359 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 15:51:05,360 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 15:51:05,363 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-11-25 15:51:05,364 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 15:51:05,387 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:05,388 WARN L623 FunctionHandler]: Unknown extern function dev_kfree_skb_any [2022-11-25 15:51:05,396 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:05,397 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 15:51:05,399 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-25 15:51:05,402 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-11-25 15:51:05,406 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 15:51:05,408 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 15:51:05,409 WARN L623 FunctionHandler]: Unknown extern function skb_add_rx_frag [2022-11-25 15:51:05,411 WARN L623 FunctionHandler]: Unknown extern function skb_add_rx_frag [2022-11-25 15:51:05,420 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 15:51:05,422 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:05,425 WARN L623 FunctionHandler]: Unknown extern function put_page [2022-11-25 15:51:05,427 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 15:51:05,432 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 15:51:05,432 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 15:51:05,448 WARN L623 FunctionHandler]: Unknown extern function usb_ifnum_to_if [2022-11-25 15:51:05,450 WARN L623 FunctionHandler]: Unknown extern function alloc_netdev_mqs [2022-11-25 15:51:05,452 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:51:05,453 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 15:51:05,455 WARN L623 FunctionHandler]: Unknown extern function usb_driver_claim_interface [2022-11-25 15:51:05,457 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 15:51:05,458 WARN L623 FunctionHandler]: Unknown extern function usb_driver_release_interface [2022-11-25 15:51:05,460 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-25 15:51:05,462 WARN L623 FunctionHandler]: Unknown extern function usb_driver_release_interface [2022-11-25 15:51:05,467 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 15:51:05,476 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_2 [2022-11-25 15:51:05,477 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_2 [2022-11-25 15:51:05,483 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-25 15:51:05,483 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 15:51:05,484 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 15:51:05,485 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 15:51:05,486 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 15:51:05,487 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_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-25 15:51:05,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:05,590 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:51:05,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05 WrapperNode [2022-11-25 15:51:05,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:05,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:05,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:51:05,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:51:05,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,802 INFO L138 Inliner]: procedures = 153, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1831 [2022-11-25 15:51:05,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:05,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:51:05,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:51:05,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:51:05,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,969 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:05,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:06,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:51:06,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:51:06,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:51:06,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:51:06,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (1/1) ... [2022-11-25 15:51:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:51:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:51:06,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:51:06,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2022-11-25 15:51:06,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2022-11-25 15:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-25 15:51:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-25 15:51:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2022-11-25 15:51:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2022-11-25 15:51:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 15:51:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-25 15:51:06,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-25 15:51:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-25 15:51:06,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-25 15:51:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2022-11-25 15:51:06,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2022-11-25 15:51:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 15:51:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 15:51:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 15:51:06,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 15:51:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:51:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-25 15:51:06,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-25 15:51:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-25 15:51:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-25 15:51:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-25 15:51:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-25 15:51:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-25 15:51:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-25 15:51:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-25 15:51:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-25 15:51:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2022-11-25 15:51:06,117 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2022-11-25 15:51:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 15:51:06,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 15:51:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-25 15:51:06,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-25 15:51:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-25 15:51:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-25 15:51:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 15:51:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 15:51:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-25 15:51:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-25 15:51:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-25 15:51:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2022-11-25 15:51:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2022-11-25 15:51:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2022-11-25 15:51:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2022-11-25 15:51:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-25 15:51:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-25 15:51:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:51:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-25 15:51:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-25 15:51:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 15:51:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 15:51:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2022-11-25 15:51:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2022-11-25 15:51:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-25 15:51:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-25 15:51:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 15:51:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 15:51:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-25 15:51:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-25 15:51:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:51:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-25 15:51:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-25 15:51:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-25 15:51:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-25 15:51:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:51:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-25 15:51:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-25 15:51:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:51:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:51:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-25 15:51:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 15:51:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 15:51:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 15:51:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-25 15:51:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-25 15:51:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-25 15:51:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-25 15:51:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-25 15:51:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-25 15:51:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:51:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 15:51:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-25 15:51:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-25 15:51:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-25 15:51:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-25 15:51:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-25 15:51:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-25 15:51:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-25 15:51:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-25 15:51:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-25 15:51:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-25 15:51:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:51:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 15:51:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:51:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:51:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2022-11-25 15:51:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2022-11-25 15:51:06,611 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:51:06,614 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:51:07,685 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 15:51:10,057 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:51:10,077 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:51:10,078 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:51:10,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:10 BoogieIcfgContainer [2022-11-25 15:51:10,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:51:10,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:51:10,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:51:10,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:51:10,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:51:03" (1/3) ... [2022-11-25 15:51:10,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43184b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:51:10, skipping insertion in model container [2022-11-25 15:51:10,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:05" (2/3) ... [2022-11-25 15:51:10,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43184b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:51:10, skipping insertion in model container [2022-11-25 15:51:10,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:10" (3/3) ... [2022-11-25 15:51:10,096 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-25 15:51:10,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:51:10,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:51:10,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:51:10,203 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;@104f97fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:51:10,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:51:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-25 15:51:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 15:51:10,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:10,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:10,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash 148447644, now seen corresponding path program 1 times [2022-11-25 15:51:10,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:10,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37467536] [2022-11-25 15:51:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:51:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:10,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:10,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:51:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:11,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:51:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 15:51:11,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:11,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37467536] [2022-11-25 15:51:11,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37467536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:11,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:11,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:51:11,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029269129] [2022-11-25 15:51:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:11,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:51:11,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:51:11,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:51:11,219 INFO L87 Difference]: Start difference. First operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 15:51:14,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:16,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:18,709 INFO L93 Difference]: Finished difference Result 1280 states and 1801 transitions. [2022-11-25 15:51:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:51:18,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-25 15:51:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:18,731 INFO L225 Difference]: With dead ends: 1280 [2022-11-25 15:51:18,731 INFO L226 Difference]: Without dead ends: 673 [2022-11-25 15:51:18,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:18,742 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 443 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:18,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1664 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-25 15:51:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-25 15:51:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 584. [2022-11-25 15:51:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 438 states have (on average 1.3333333333333333) internal successors, (584), 449 states have internal predecessors, (584), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-25 15:51:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 793 transitions. [2022-11-25 15:51:18,848 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 793 transitions. Word has length 78 [2022-11-25 15:51:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:18,848 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 793 transitions. [2022-11-25 15:51:18,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 15:51:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 793 transitions. [2022-11-25 15:51:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 15:51:18,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:18,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:18,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:51:18,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash 354669602, now seen corresponding path program 1 times [2022-11-25 15:51:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906737868] [2022-11-25 15:51:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:18,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:51:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:51:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:51:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 15:51:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:19,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906737868] [2022-11-25 15:51:19,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906737868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:19,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:19,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:51:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644686264] [2022-11-25 15:51:19,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:19,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:51:19,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:51:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:19,255 INFO L87 Difference]: Start difference. First operand 584 states and 793 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 15:51:25,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:28,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:29,847 INFO L93 Difference]: Finished difference Result 1867 states and 2577 transitions. [2022-11-25 15:51:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:51:29,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2022-11-25 15:51:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:29,862 INFO L225 Difference]: With dead ends: 1867 [2022-11-25 15:51:29,862 INFO L226 Difference]: Without dead ends: 1301 [2022-11-25 15:51:29,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:51:29,874 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1549 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:29,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 2276 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-25 15:51:29,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2022-11-25 15:51:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1127. [2022-11-25 15:51:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3337264150943395) internal successors, (1131), 866 states have internal predecessors, (1131), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-25 15:51:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1532 transitions. [2022-11-25 15:51:30,010 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1532 transitions. Word has length 78 [2022-11-25 15:51:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:30,011 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1532 transitions. [2022-11-25 15:51:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 15:51:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1532 transitions. [2022-11-25 15:51:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 15:51:30,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:30,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:30,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:51:30,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2694347, now seen corresponding path program 1 times [2022-11-25 15:51:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:30,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952846229] [2022-11-25 15:51:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:51:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:51:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:51:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:51:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 15:51:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952846229] [2022-11-25 15:51:30,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952846229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:30,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:30,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:51:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111946564] [2022-11-25 15:51:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:30,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:51:30,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:30,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:51:30,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:30,489 INFO L87 Difference]: Start difference. First operand 1127 states and 1532 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-25 15:51:35,052 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 15:51:37,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:37,772 INFO L93 Difference]: Finished difference Result 1327 states and 1836 transitions. [2022-11-25 15:51:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:51:37,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 98 [2022-11-25 15:51:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:37,780 INFO L225 Difference]: With dead ends: 1327 [2022-11-25 15:51:37,780 INFO L226 Difference]: Without dead ends: 1314 [2022-11-25 15:51:37,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:51:37,782 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1183 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 336 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:37,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1661 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 754 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-25 15:51:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2022-11-25 15:51:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1127. [2022-11-25 15:51:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3325471698113207) internal successors, (1130), 866 states have internal predecessors, (1130), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-25 15:51:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1531 transitions. [2022-11-25 15:51:37,859 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1531 transitions. Word has length 98 [2022-11-25 15:51:37,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:37,860 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1531 transitions. [2022-11-25 15:51:37,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-25 15:51:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1531 transitions. [2022-11-25 15:51:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 15:51:37,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:37,862 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:37,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:51:37,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash 59952649, now seen corresponding path program 1 times [2022-11-25 15:51:37,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:37,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083315054] [2022-11-25 15:51:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:51:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:51:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:51:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:51:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 15:51:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:38,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083315054] [2022-11-25 15:51:38,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083315054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:38,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:38,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:51:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329377770] [2022-11-25 15:51:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:38,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:51:38,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:51:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:38,638 INFO L87 Difference]: Start difference. First operand 1127 states and 1531 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:51:42,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:44,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:46,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:49,420 INFO L93 Difference]: Finished difference Result 3688 states and 5192 transitions. [2022-11-25 15:51:49,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:51:49,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2022-11-25 15:51:49,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:49,435 INFO L225 Difference]: With dead ends: 3688 [2022-11-25 15:51:49,435 INFO L226 Difference]: Without dead ends: 2579 [2022-11-25 15:51:49,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:51:49,441 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 1674 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:49,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2419 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-25 15:51:49,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-11-25 15:51:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2305. [2022-11-25 15:51:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1735 states have (on average 1.3302593659942363) internal successors, (2308), 1777 states have internal predecessors, (2308), 406 states have call successors, (406), 150 states have call predecessors, (406), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-25 15:51:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3177 transitions. [2022-11-25 15:51:49,589 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3177 transitions. Word has length 98 [2022-11-25 15:51:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:49,589 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3177 transitions. [2022-11-25 15:51:49,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:51:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3177 transitions. [2022-11-25 15:51:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 15:51:49,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:49,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:49,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:51:49,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:49,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:49,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1858300209, now seen corresponding path program 1 times [2022-11-25 15:51:49,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:49,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004211677] [2022-11-25 15:51:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:49,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:51:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:49,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:51:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:51:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:51:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 15:51:50,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:50,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004211677] [2022-11-25 15:51:50,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004211677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:50,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:50,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:51:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897037888] [2022-11-25 15:51:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:51:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:51:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:50,108 INFO L87 Difference]: Start difference. First operand 2305 states and 3177 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:51:53,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:51:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:55,980 INFO L93 Difference]: Finished difference Result 2571 states and 3606 transitions. [2022-11-25 15:51:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:51:55,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-11-25 15:51:55,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:55,995 INFO L225 Difference]: With dead ends: 2571 [2022-11-25 15:51:55,996 INFO L226 Difference]: Without dead ends: 2568 [2022-11-25 15:51:55,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:51:55,998 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1156 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:55,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1596 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 15:51:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-25 15:51:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2304. [2022-11-25 15:51:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1735 states have (on average 1.3296829971181556) internal successors, (2307), 1776 states have internal predecessors, (2307), 405 states have call successors, (405), 150 states have call predecessors, (405), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-25 15:51:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3175 transitions. [2022-11-25 15:51:56,194 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3175 transitions. Word has length 99 [2022-11-25 15:51:56,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:56,196 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 3175 transitions. [2022-11-25 15:51:56,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:51:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3175 transitions. [2022-11-25 15:51:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 15:51:56,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:56,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:56,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:51:56,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1772504588, now seen corresponding path program 1 times [2022-11-25 15:51:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:56,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733538476] [2022-11-25 15:51:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:51:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:51:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:51:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:51:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:51:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:51:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 15:51:56,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:56,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733538476] [2022-11-25 15:51:56,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733538476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:56,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:56,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:51:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952652414] [2022-11-25 15:51:56,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:56,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:51:56,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:51:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:56,546 INFO L87 Difference]: Start difference. First operand 2304 states and 3175 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:52:00,070 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 15:52:01,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:01,172 INFO L93 Difference]: Finished difference Result 2570 states and 3604 transitions. [2022-11-25 15:52:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:01,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2022-11-25 15:52:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:01,187 INFO L225 Difference]: With dead ends: 2570 [2022-11-25 15:52:01,188 INFO L226 Difference]: Without dead ends: 2567 [2022-11-25 15:52:01,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:52:01,191 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1455 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 474 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:01,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1055 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 15:52:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-11-25 15:52:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2303. [2022-11-25 15:52:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1735 states have (on average 1.329106628242075) internal successors, (2306), 1775 states have internal predecessors, (2306), 404 states have call successors, (404), 150 states have call predecessors, (404), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-25 15:52:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3173 transitions. [2022-11-25 15:52:01,394 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3173 transitions. Word has length 100 [2022-11-25 15:52:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:01,395 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 3173 transitions. [2022-11-25 15:52:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:52:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3173 transitions. [2022-11-25 15:52:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 15:52:01,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:01,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:52:01,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:01,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash -887154796, now seen corresponding path program 1 times [2022-11-25 15:52:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:01,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867597075] [2022-11-25 15:52:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:01,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:52:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:52:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:52:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:52:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:52:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 15:52:01,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:01,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867597075] [2022-11-25 15:52:01,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867597075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:01,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:01,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:52:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729469798] [2022-11-25 15:52:01,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:01,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:52:01,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:52:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:52:01,702 INFO L87 Difference]: Start difference. First operand 2303 states and 3173 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:52:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:07,100 INFO L93 Difference]: Finished difference Result 2569 states and 3602 transitions. [2022-11-25 15:52:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:07,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-25 15:52:07,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:07,114 INFO L225 Difference]: With dead ends: 2569 [2022-11-25 15:52:07,114 INFO L226 Difference]: Without dead ends: 2566 [2022-11-25 15:52:07,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:52:07,117 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1150 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:07,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 1590 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-25 15:52:07,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-11-25 15:52:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2302. [2022-11-25 15:52:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1735 states have (on average 1.3285302593659942) internal successors, (2305), 1774 states have internal predecessors, (2305), 403 states have call successors, (403), 150 states have call predecessors, (403), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-25 15:52:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3171 transitions. [2022-11-25 15:52:07,325 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3171 transitions. Word has length 101 [2022-11-25 15:52:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:07,326 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3171 transitions. [2022-11-25 15:52:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:52:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3171 transitions. [2022-11-25 15:52:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 15:52:07,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:07,330 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:07,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:52:07,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1732212209, now seen corresponding path program 1 times [2022-11-25 15:52:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:07,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246074985] [2022-11-25 15:52:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:52:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:52:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:52:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:52:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:52:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 15:52:07,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:07,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246074985] [2022-11-25 15:52:07,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246074985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:07,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:07,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:52:07,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663060947] [2022-11-25 15:52:07,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:07,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:52:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:52:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:52:07,645 INFO L87 Difference]: Start difference. First operand 2302 states and 3171 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:52:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:10,550 INFO L93 Difference]: Finished difference Result 2568 states and 3600 transitions. [2022-11-25 15:52:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:10,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2022-11-25 15:52:10,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:10,562 INFO L225 Difference]: With dead ends: 2568 [2022-11-25 15:52:10,562 INFO L226 Difference]: Without dead ends: 2556 [2022-11-25 15:52:10,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:52:10,564 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1447 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:10,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1055 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 15:52:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-11-25 15:52:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2292. [2022-11-25 15:52:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1726 states have (on average 1.3285052143684821) internal successors, (2293), 1764 states have internal predecessors, (2293), 402 states have call successors, (402), 150 states have call predecessors, (402), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2022-11-25 15:52:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3158 transitions. [2022-11-25 15:52:10,744 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3158 transitions. Word has length 102 [2022-11-25 15:52:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:10,745 INFO L495 AbstractCegarLoop]: Abstraction has 2292 states and 3158 transitions. [2022-11-25 15:52:10,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:52:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3158 transitions. [2022-11-25 15:52:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-25 15:52:10,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:10,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:10,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:52:10,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash 871426742, now seen corresponding path program 1 times [2022-11-25 15:52:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:10,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334499190] [2022-11-25 15:52:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:10,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:52:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:52:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:52:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:52:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:52:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 15:52:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:52:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 15:52:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 15:52:11,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:11,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334499190] [2022-11-25 15:52:11,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334499190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:11,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:11,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:52:11,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294043374] [2022-11-25 15:52:11,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:11,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:52:11,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:11,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:52:11,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:52:11,069 INFO L87 Difference]: Start difference. First operand 2292 states and 3158 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:52:17,747 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 15:52:19,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:52:20,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:52:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:24,608 INFO L93 Difference]: Finished difference Result 7214 states and 10130 transitions. [2022-11-25 15:52:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:52:24,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 139 [2022-11-25 15:52:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:24,634 INFO L225 Difference]: With dead ends: 7214 [2022-11-25 15:52:24,634 INFO L226 Difference]: Without dead ends: 4940 [2022-11-25 15:52:24,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:52:24,643 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 1437 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 688 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:24,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 3839 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 2266 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2022-11-25 15:52:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2022-11-25 15:52:25,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4402. [2022-11-25 15:52:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3292 states have (on average 1.3210814094775212) internal successors, (4349), 3398 states have internal predecessors, (4349), 760 states have call successors, (760), 288 states have call predecessors, (760), 349 states have return successors, (1051), 759 states have call predecessors, (1051), 759 states have call successors, (1051) [2022-11-25 15:52:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6160 transitions. [2022-11-25 15:52:25,095 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6160 transitions. Word has length 139 [2022-11-25 15:52:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:25,096 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6160 transitions. [2022-11-25 15:52:25,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:52:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6160 transitions. [2022-11-25 15:52:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-25 15:52:25,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:25,105 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:25,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:52:25,106 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:25,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:25,106 INFO L85 PathProgramCache]: Analyzing trace with hash 507122438, now seen corresponding path program 1 times [2022-11-25 15:52:25,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:25,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465035661] [2022-11-25 15:52:25,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:25,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:52:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:52:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:52:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:52:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 15:52:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 15:52:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 15:52:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 15:52:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 15:52:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 15:52:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:52:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 15:52:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 15:52:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:52:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-25 15:52:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:52:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:52:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-25 15:52:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-25 15:52:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-25 15:52:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:52:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-11-25 15:52:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-25 15:52:25,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:25,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465035661] [2022-11-25 15:52:25,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465035661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:25,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:25,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:52:25,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962601112] [2022-11-25 15:52:25,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:25,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:52:25,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:52:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:52:25,729 INFO L87 Difference]: Start difference. First operand 4402 states and 6160 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:52:30,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:52:36,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:36,251 INFO L93 Difference]: Finished difference Result 13360 states and 18868 transitions. [2022-11-25 15:52:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:52:36,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 254 [2022-11-25 15:52:36,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:36,313 INFO L225 Difference]: With dead ends: 13360 [2022-11-25 15:52:36,313 INFO L226 Difference]: Without dead ends: 8986 [2022-11-25 15:52:36,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2022-11-25 15:52:36,329 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 2798 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 1302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1302 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:36,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2874 Valid, 1787 Invalid, 3810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1302 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-25 15:52:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2022-11-25 15:52:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 7976. [2022-11-25 15:52:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7976 states, 5976 states have (on average 1.3211178045515395) internal successors, (7895), 6172 states have internal predecessors, (7895), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2022-11-25 15:52:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 11146 transitions. [2022-11-25 15:52:37,247 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 11146 transitions. Word has length 254 [2022-11-25 15:52:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:37,248 INFO L495 AbstractCegarLoop]: Abstraction has 7976 states and 11146 transitions. [2022-11-25 15:52:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:52:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 11146 transitions. [2022-11-25 15:52:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-25 15:52:37,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:37,257 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:37,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:52:37,258 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash 234758432, now seen corresponding path program 1 times [2022-11-25 15:52:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:37,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633541345] [2022-11-25 15:52:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:37,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:52:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:52:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:52:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:52:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:52:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:52:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:52:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:52:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:52:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-25 15:52:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 15:52:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:52:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-25 15:52:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 15:52:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-25 15:52:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-25 15:52:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-25 15:52:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:52:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-25 15:52:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-25 15:52:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-25 15:52:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:52:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-25 15:52:37,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633541345] [2022-11-25 15:52:37,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633541345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:37,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:37,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:52:37,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482554914] [2022-11-25 15:52:37,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:37,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:52:37,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:52:37,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:52:37,801 INFO L87 Difference]: Start difference. First operand 7976 states and 11146 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:52:42,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:52:44,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:52:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:48,333 INFO L93 Difference]: Finished difference Result 18218 states and 26137 transitions. [2022-11-25 15:52:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:52:48,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 263 [2022-11-25 15:52:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:48,384 INFO L225 Difference]: With dead ends: 18218 [2022-11-25 15:52:48,384 INFO L226 Difference]: Without dead ends: 10270 [2022-11-25 15:52:48,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:52:48,412 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1247 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 2671 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:48,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 2381 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2671 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-25 15:52:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2022-11-25 15:52:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 8056. [2022-11-25 15:52:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8056 states, 6056 states have (on average 1.3248018494055482) internal successors, (8023), 6252 states have internal predecessors, (8023), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2022-11-25 15:52:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8056 states to 8056 states and 11274 transitions. [2022-11-25 15:52:49,179 INFO L78 Accepts]: Start accepts. Automaton has 8056 states and 11274 transitions. Word has length 263 [2022-11-25 15:52:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:49,179 INFO L495 AbstractCegarLoop]: Abstraction has 8056 states and 11274 transitions. [2022-11-25 15:52:49,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:52:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 8056 states and 11274 transitions. [2022-11-25 15:52:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-25 15:52:49,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:49,189 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:52:49,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1207162728, now seen corresponding path program 1 times [2022-11-25 15:52:49,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:49,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839198362] [2022-11-25 15:52:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:49,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:52:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:52:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:52:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:52:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:52:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:52:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:52:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:52:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:52:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:52:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:52:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:52:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:52:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:52:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:52:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:52:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:52:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:52:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:52:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:52:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:52:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-11-25 15:52:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-25 15:52:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:52:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:52:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-25 15:52:49,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:49,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839198362] [2022-11-25 15:52:49,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839198362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:49,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:49,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 15:52:49,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314222999] [2022-11-25 15:52:49,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:49,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:52:49,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:49,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:52:49,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:52:49,848 INFO L87 Difference]: Start difference. First operand 8056 states and 11274 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:52:55,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:52:58,373 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 15:53:03,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:53:03,619 INFO L93 Difference]: Finished difference Result 27286 states and 39018 transitions. [2022-11-25 15:53:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 15:53:03,620 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 270 [2022-11-25 15:53:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:53:03,705 INFO L225 Difference]: With dead ends: 27286 [2022-11-25 15:53:03,706 INFO L226 Difference]: Without dead ends: 19258 [2022-11-25 15:53:03,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:53:03,738 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 3650 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 1634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 5102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1634 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:53:03,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3746 Valid, 2134 Invalid, 5102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1634 Valid, 3467 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2022-11-25 15:53:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19258 states. [2022-11-25 15:53:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19258 to 16040. [2022-11-25 15:53:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16040 states, 12052 states have (on average 1.3253401924991703) internal successors, (15973), 12452 states have internal predecessors, (15973), 2680 states have call successors, (2680), 1060 states have call predecessors, (2680), 1307 states have return successors, (3807), 2695 states have call predecessors, (3807), 2679 states have call successors, (3807) [2022-11-25 15:53:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16040 states to 16040 states and 22460 transitions. [2022-11-25 15:53:05,608 INFO L78 Accepts]: Start accepts. Automaton has 16040 states and 22460 transitions. Word has length 270 [2022-11-25 15:53:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:53:05,609 INFO L495 AbstractCegarLoop]: Abstraction has 16040 states and 22460 transitions. [2022-11-25 15:53:05,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:53:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16040 states and 22460 transitions. [2022-11-25 15:53:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-25 15:53:05,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:53:05,622 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:53:05,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:53:05,622 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:53:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:53:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1701019158, now seen corresponding path program 1 times [2022-11-25 15:53:05,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:53:05,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394477350] [2022-11-25 15:53:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:53:05,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:53:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:53:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:53:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:05,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:53:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:53:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:53:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:53:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:53:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:53:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:53:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:53:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:53:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:53:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:53:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:53:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:53:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:53:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:53:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:53:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:53:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:53:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-11-25 15:53:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-25 15:53:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:53:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-25 15:53:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:53:06,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394477350] [2022-11-25 15:53:06,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394477350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:53:06,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:53:06,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:53:06,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671659454] [2022-11-25 15:53:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:53:06,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:53:06,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:53:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:53:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:53:06,225 INFO L87 Difference]: Start difference. First operand 16040 states and 22460 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-25 15:53:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:53:16,595 INFO L93 Difference]: Finished difference Result 35760 states and 50446 transitions. [2022-11-25 15:53:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:53:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 270 [2022-11-25 15:53:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:53:16,687 INFO L225 Difference]: With dead ends: 35760 [2022-11-25 15:53:16,688 INFO L226 Difference]: Without dead ends: 19748 [2022-11-25 15:53:16,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-11-25 15:53:16,733 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1524 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:53:16,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 1804 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-25 15:53:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2022-11-25 15:53:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 17632. [2022-11-25 15:53:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17632 states, 13392 states have (on average 1.3278823178016725) internal successors, (17783), 13804 states have internal predecessors, (17783), 2828 states have call successors, (2828), 1164 states have call predecessors, (2828), 1411 states have return successors, (3963), 2831 states have call predecessors, (3963), 2827 states have call successors, (3963) [2022-11-25 15:53:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17632 states to 17632 states and 24574 transitions. [2022-11-25 15:53:18,325 INFO L78 Accepts]: Start accepts. Automaton has 17632 states and 24574 transitions. Word has length 270 [2022-11-25 15:53:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:53:18,326 INFO L495 AbstractCegarLoop]: Abstraction has 17632 states and 24574 transitions. [2022-11-25 15:53:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-25 15:53:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 17632 states and 24574 transitions. [2022-11-25 15:53:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-25 15:53:18,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:53:18,341 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:18,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:53:18,341 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:53:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:53:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1669474714, now seen corresponding path program 1 times [2022-11-25 15:53:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:53:18,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261301623] [2022-11-25 15:53:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:53:18,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:53:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:53:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:53:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:53:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:53:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:53:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:53:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:53:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:53:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:53:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:53:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:53:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:53:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:53:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:53:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:53:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:53:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:53:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:53:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:53:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:53:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-25 15:53:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 15:53:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:53:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-25 15:53:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:53:19,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261301623] [2022-11-25 15:53:19,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261301623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:53:19,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:53:19,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:53:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371859314] [2022-11-25 15:53:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:53:19,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:53:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:53:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:53:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:53:19,092 INFO L87 Difference]: Start difference. First operand 17632 states and 24574 transitions. Second operand has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:53:24,786 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 15:53:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:53:30,747 INFO L93 Difference]: Finished difference Result 45704 states and 64170 transitions. [2022-11-25 15:53:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:53:30,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 284 [2022-11-25 15:53:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:53:30,860 INFO L225 Difference]: With dead ends: 45704 [2022-11-25 15:53:30,860 INFO L226 Difference]: Without dead ends: 28100 [2022-11-25 15:53:30,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:53:30,907 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 3099 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 1509 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1509 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:53:30,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 1653 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1509 Valid, 2433 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-25 15:53:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28100 states. [2022-11-25 15:53:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28100 to 24812. [2022-11-25 15:53:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24812 states, 18920 states have (on average 1.325845665961945) internal successors, (25085), 19484 states have internal predecessors, (25085), 3864 states have call successors, (3864), 1692 states have call predecessors, (3864), 2027 states have return successors, (5523), 3859 states have call predecessors, (5523), 3863 states have call successors, (5523) [2022-11-25 15:53:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24812 states to 24812 states and 34472 transitions. [2022-11-25 15:53:33,122 INFO L78 Accepts]: Start accepts. Automaton has 24812 states and 34472 transitions. Word has length 284 [2022-11-25 15:53:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:53:33,123 INFO L495 AbstractCegarLoop]: Abstraction has 24812 states and 34472 transitions. [2022-11-25 15:53:33,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 15:53:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 24812 states and 34472 transitions. [2022-11-25 15:53:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-25 15:53:33,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:53:33,144 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:53:33,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:53:33,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:53:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:53:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash -575185571, now seen corresponding path program 1 times [2022-11-25 15:53:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:53:33,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880297277] [2022-11-25 15:53:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:53:33,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:53:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:53:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:53:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:53:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:53:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:53:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:53:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:53:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:53:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:53:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:53:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:53:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:53:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:53:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:53:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:53:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:53:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:53:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:53:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:53:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:53:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 15:53:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 15:53:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-25 15:53:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 15:53:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:53:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-25 15:53:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:53:34,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880297277] [2022-11-25 15:53:34,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880297277] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:53:34,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956107867] [2022-11-25 15:53:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:53:34,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:53:34,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:53:34,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:53:34,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:53:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:35,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2583 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:53:35,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:53:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-25 15:53:35,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:53:35,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956107867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:53:35,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:53:35,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2022-11-25 15:53:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806285339] [2022-11-25 15:53:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:53:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:53:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:53:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:53:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:53:35,800 INFO L87 Difference]: Start difference. First operand 24812 states and 34472 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-25 15:53:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:53:44,260 INFO L93 Difference]: Finished difference Result 99163 states and 137787 transitions. [2022-11-25 15:53:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:53:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 307 [2022-11-25 15:53:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:53:44,652 INFO L225 Difference]: With dead ends: 99163 [2022-11-25 15:53:44,653 INFO L226 Difference]: Without dead ends: 99155 [2022-11-25 15:53:44,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:53:44,685 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 2470 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:53:44,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 3600 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 15:53:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99155 states. [2022-11-25 15:53:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99155 to 86708. [2022-11-25 15:53:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86708 states, 66116 states have (on average 1.3259271583277876) internal successors, (87665), 68120 states have internal predecessors, (87665), 13504 states have call successors, (13504), 5912 states have call predecessors, (13504), 7087 states have return successors, (19313), 13459 states have call predecessors, (19313), 13503 states have call successors, (19313) [2022-11-25 15:53:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86708 states to 86708 states and 120482 transitions. [2022-11-25 15:53:52,078 INFO L78 Accepts]: Start accepts. Automaton has 86708 states and 120482 transitions. Word has length 307 [2022-11-25 15:53:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:53:52,079 INFO L495 AbstractCegarLoop]: Abstraction has 86708 states and 120482 transitions. [2022-11-25 15:53:52,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-25 15:53:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 86708 states and 120482 transitions. [2022-11-25 15:53:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-25 15:53:52,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:53:52,179 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:52,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 15:53:52,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 15:53:52,391 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:53:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:53:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1549136553, now seen corresponding path program 1 times [2022-11-25 15:53:52,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:53:52,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683458687] [2022-11-25 15:53:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:53:52,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:53:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:53:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:53:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:53:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:53:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:53:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:52,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:53:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:53:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 15:53:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:53:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:53:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:53:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:53:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-25 15:53:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-25 15:53:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-25 15:53:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-25 15:53:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:53:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-25 15:53:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-25 15:53:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-25 15:53:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:53:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-11-25 15:53:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-25 15:53:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-11-25 15:53:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-25 15:53:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 15:53:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:53:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:53:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-11-25 15:53:53,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:53:53,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683458687] [2022-11-25 15:53:53,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683458687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:53:53,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:53:53,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 15:53:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524738297] [2022-11-25 15:53:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:53:53,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:53:53,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:53:53,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:53:53,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:53:53,370 INFO L87 Difference]: Start difference. First operand 86708 states and 120482 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-25 15:53:59,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:54:05,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:54:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:54:10,504 INFO L93 Difference]: Finished difference Result 133409 states and 185915 transitions. [2022-11-25 15:54:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:54:10,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 321 [2022-11-25 15:54:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:54:10,693 INFO L225 Difference]: With dead ends: 133409 [2022-11-25 15:54:10,694 INFO L226 Difference]: Without dead ends: 46729 [2022-11-25 15:54:10,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:54:10,877 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 2345 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 1246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 4543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1246 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:54:10,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 1827 Invalid, 4543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 3297 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-25 15:54:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46729 states. [2022-11-25 15:54:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46729 to 26614. [2022-11-25 15:54:13,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26614 states, 20513 states have (on average 1.3247696582654902) internal successors, (27175), 21073 states have internal predecessors, (27175), 3980 states have call successors, (3980), 1781 states have call predecessors, (3980), 2120 states have return successors, (5631), 3987 states have call predecessors, (5631), 3979 states have call successors, (5631) [2022-11-25 15:54:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26614 states to 26614 states and 36786 transitions. [2022-11-25 15:54:14,049 INFO L78 Accepts]: Start accepts. Automaton has 26614 states and 36786 transitions. Word has length 321 [2022-11-25 15:54:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:54:14,050 INFO L495 AbstractCegarLoop]: Abstraction has 26614 states and 36786 transitions. [2022-11-25 15:54:14,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-25 15:54:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 26614 states and 36786 transitions. [2022-11-25 15:54:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-25 15:54:14,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:54:14,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:14,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:54:14,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:54:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:54:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2025296956, now seen corresponding path program 1 times [2022-11-25 15:54:14,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:54:14,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085495757] [2022-11-25 15:54:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:54:14,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:54:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:54:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:54:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:54:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:54:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:54:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:54:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:54:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:54:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:54:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:54:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:54:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:54:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:54:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:54:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:54:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:54:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:54:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:54:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:54:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:54:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 15:54:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 15:54:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-25 15:54:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 15:54:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:54:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-25 15:54:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-25 15:54:14,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:54:14,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085495757] [2022-11-25 15:54:14,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085495757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:54:14,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:54:14,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:54:14,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163998591] [2022-11-25 15:54:14,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:54:14,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:54:14,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:54:14,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:54:14,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:54:14,828 INFO L87 Difference]: Start difference. First operand 26614 states and 36786 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-25 15:54:21,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:54:23,033 WARN L539 Checker$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 15:54:27,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:54:28,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:54:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:54:34,859 INFO L93 Difference]: Finished difference Result 56386 states and 78447 transitions. [2022-11-25 15:54:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:54:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 327 [2022-11-25 15:54:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:54:34,963 INFO L225 Difference]: With dead ends: 56386 [2022-11-25 15:54:34,964 INFO L226 Difference]: Without dead ends: 26633 [2022-11-25 15:54:35,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:54:35,028 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1882 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 4548 mSolverCounterSat, 946 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 5495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 4548 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:54:35,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 2478 Invalid, 5495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [946 Valid, 4548 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2022-11-25 15:54:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26633 states. [2022-11-25 15:54:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26633 to 23840. [2022-11-25 15:54:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23840 states, 18368 states have (on average 1.320176393728223) internal successors, (24249), 18869 states have internal predecessors, (24249), 3575 states have call successors, (3575), 1593 states have call predecessors, (3575), 1896 states have return successors, (5051), 3575 states have call predecessors, (5051), 3574 states have call successors, (5051) [2022-11-25 15:54:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23840 states to 23840 states and 32875 transitions. [2022-11-25 15:54:37,331 INFO L78 Accepts]: Start accepts. Automaton has 23840 states and 32875 transitions. Word has length 327 [2022-11-25 15:54:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:54:37,332 INFO L495 AbstractCegarLoop]: Abstraction has 23840 states and 32875 transitions. [2022-11-25 15:54:37,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-25 15:54:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 23840 states and 32875 transitions. [2022-11-25 15:54:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-25 15:54:37,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:54:37,354 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:54:37,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:54:37,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:54:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:54:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1153702214, now seen corresponding path program 1 times [2022-11-25 15:54:37,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:54:37,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3586705] [2022-11-25 15:54:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:54:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:54:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:54:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:54:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:54:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:54:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:54:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:54:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:54:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:54:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:54:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:54:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:54:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:54:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:54:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:54:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:54:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:54:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:54:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:54:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:54:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:54:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 15:54:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 15:54:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-25 15:54:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 15:54:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:54:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-25 15:54:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-25 15:54:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:54:37,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3586705] [2022-11-25 15:54:37,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3586705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:54:37,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:54:37,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:54:37,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772818326] [2022-11-25 15:54:37,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:54:37,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:54:37,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:54:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:54:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:54:37,900 INFO L87 Difference]: Start difference. First operand 23840 states and 32875 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 15:54:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:54:46,302 INFO L93 Difference]: Finished difference Result 35431 states and 49082 transitions. [2022-11-25 15:54:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:54:46,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 327 [2022-11-25 15:54:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:54:46,347 INFO L225 Difference]: With dead ends: 35431 [2022-11-25 15:54:46,347 INFO L226 Difference]: Without dead ends: 11636 [2022-11-25 15:54:46,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:54:46,394 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1250 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:54:46,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1555 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-25 15:54:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2022-11-25 15:54:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 10435. [2022-11-25 15:54:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10435 states, 8039 states have (on average 1.3213086204751834) internal successors, (10622), 8260 states have internal predecessors, (10622), 1568 states have call successors, (1568), 694 states have call predecessors, (1568), 827 states have return successors, (2218), 1564 states have call predecessors, (2218), 1567 states have call successors, (2218) [2022-11-25 15:54:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10435 states to 10435 states and 14408 transitions. [2022-11-25 15:54:47,422 INFO L78 Accepts]: Start accepts. Automaton has 10435 states and 14408 transitions. Word has length 327 [2022-11-25 15:54:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:54:47,423 INFO L495 AbstractCegarLoop]: Abstraction has 10435 states and 14408 transitions. [2022-11-25 15:54:47,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 15:54:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 10435 states and 14408 transitions. [2022-11-25 15:54:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-25 15:54:47,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:54:47,431 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:47,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:54:47,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:54:47,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:54:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1859480282, now seen corresponding path program 1 times [2022-11-25 15:54:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:54:47,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652151257] [2022-11-25 15:54:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:54:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:54:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:54:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:54:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:54:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:54:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:54:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:54:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:54:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:54:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:54:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:54:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:54:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:54:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:54:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:54:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:54:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:54:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:54:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:54:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:54:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:54:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:54:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 15:54:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 15:54:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-25 15:54:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 15:54:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:54:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:54:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-11-25 15:54:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:54:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-25 15:54:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:54:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652151257] [2022-11-25 15:54:48,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652151257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:54:48,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:54:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 15:54:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797532173] [2022-11-25 15:54:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:54:48,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:54:48,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:54:48,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:54:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:54:48,215 INFO L87 Difference]: Start difference. First operand 10435 states and 14408 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 15:54:53,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:54:55,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:54:57,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:55:00,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:55:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:55:06,623 INFO L93 Difference]: Finished difference Result 22086 states and 30680 transitions. [2022-11-25 15:55:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:55:06,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 335 [2022-11-25 15:55:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:55:06,652 INFO L225 Difference]: With dead ends: 22086 [2022-11-25 15:55:06,652 INFO L226 Difference]: Without dead ends: 11720 [2022-11-25 15:55:06,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:55:06,669 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2135 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 4901 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 6053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 4901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:55:06,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2202 Valid, 2346 Invalid, 6053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 4901 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2022-11-25 15:55:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11720 states. [2022-11-25 15:55:07,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11720 to 10435. [2022-11-25 15:55:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10435 states, 8039 states have (on average 1.313098644109964) internal successors, (10556), 8260 states have internal predecessors, (10556), 1568 states have call successors, (1568), 694 states have call predecessors, (1568), 827 states have return successors, (2218), 1564 states have call predecessors, (2218), 1567 states have call successors, (2218) [2022-11-25 15:55:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10435 states to 10435 states and 14342 transitions. [2022-11-25 15:55:07,607 INFO L78 Accepts]: Start accepts. Automaton has 10435 states and 14342 transitions. Word has length 335 [2022-11-25 15:55:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:55:07,608 INFO L495 AbstractCegarLoop]: Abstraction has 10435 states and 14342 transitions. [2022-11-25 15:55:07,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 15:55:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 10435 states and 14342 transitions. [2022-11-25 15:55:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-25 15:55:07,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:55:07,619 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:07,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 15:55:07,619 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:55:07,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:55:07,620 INFO L85 PathProgramCache]: Analyzing trace with hash -463508477, now seen corresponding path program 1 times [2022-11-25 15:55:07,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:55:07,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472027781] [2022-11-25 15:55:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:07,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:55:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:55:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:55:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:55:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:55:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:55:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:55:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:55:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:55:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:55:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:55:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:55:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:55:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:55:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:55:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:55:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:55:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:55:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:55:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:55:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:55:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 15:55:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 15:55:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 15:55:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:55:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-25 15:55:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:55:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:55:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-11-25 15:55:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-25 15:55:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:55:08,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472027781] [2022-11-25 15:55:08,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472027781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:55:08,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:55:08,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 15:55:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483287719] [2022-11-25 15:55:08,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:55:08,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 15:55:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:55:08,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 15:55:08,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:55:08,987 INFO L87 Difference]: Start difference. First operand 10435 states and 14342 transitions. Second operand has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 15:55:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:55:23,672 INFO L93 Difference]: Finished difference Result 22209 states and 30800 transitions. [2022-11-25 15:55:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:55:23,679 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 356 [2022-11-25 15:55:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:55:23,722 INFO L225 Difference]: With dead ends: 22209 [2022-11-25 15:55:23,723 INFO L226 Difference]: Without dead ends: 11843 [2022-11-25 15:55:23,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-11-25 15:55:23,747 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1417 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 5732 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 6443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 5732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:55:23,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3049 Invalid, 6443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 5732 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-25 15:55:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2022-11-25 15:55:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 10426. [2022-11-25 15:55:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10426 states, 8030 states have (on average 1.3112079701120798) internal successors, (10529), 8251 states have internal predecessors, (10529), 1577 states have call successors, (1577), 694 states have call predecessors, (1577), 818 states have return successors, (2173), 1564 states have call predecessors, (2173), 1576 states have call successors, (2173) [2022-11-25 15:55:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10426 states to 10426 states and 14279 transitions. [2022-11-25 15:55:24,833 INFO L78 Accepts]: Start accepts. Automaton has 10426 states and 14279 transitions. Word has length 356 [2022-11-25 15:55:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:55:24,833 INFO L495 AbstractCegarLoop]: Abstraction has 10426 states and 14279 transitions. [2022-11-25 15:55:24,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 15:55:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 10426 states and 14279 transitions. [2022-11-25 15:55:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-25 15:55:24,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:55:24,846 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:24,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 15:55:24,846 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:55:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:55:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash -971119431, now seen corresponding path program 1 times [2022-11-25 15:55:24,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:55:24,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330156921] [2022-11-25 15:55:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:24,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:55:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:55:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:55:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:55:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:55:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:55:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:55:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:55:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:55:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:55:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:55:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:55:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:55:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:55:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:55:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:55:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:55:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:55:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:55:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:55:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:55:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 15:55:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 15:55:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 15:55:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:55:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-25 15:55:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:55:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 15:55:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-11-25 15:55:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-25 15:55:26,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:55:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330156921] [2022-11-25 15:55:26,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330156921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:55:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917899398] [2022-11-25 15:55:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:26,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:55:26,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:55:26,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:55:26,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:55:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:55:27,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:55:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-25 15:55:27,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:55:27,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917899398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:55:27,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:55:27,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-25 15:55:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621543963] [2022-11-25 15:55:27,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:55:27,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:55:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:55:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:55:27,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:55:27,537 INFO L87 Difference]: Start difference. First operand 10426 states and 14279 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 15:55:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:55:30,581 INFO L93 Difference]: Finished difference Result 23911 states and 33228 transitions. [2022-11-25 15:55:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:55:30,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 357 [2022-11-25 15:55:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:55:30,626 INFO L225 Difference]: With dead ends: 23911 [2022-11-25 15:55:30,627 INFO L226 Difference]: Without dead ends: 13554 [2022-11-25 15:55:30,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:55:30,651 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 967 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:55:30,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 2529 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 15:55:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13554 states. [2022-11-25 15:55:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13554 to 10450. [2022-11-25 15:55:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10450 states, 8054 states have (on average 1.3102806059101069) internal successors, (10553), 8275 states have internal predecessors, (10553), 1577 states have call successors, (1577), 694 states have call predecessors, (1577), 818 states have return successors, (2173), 1564 states have call predecessors, (2173), 1576 states have call successors, (2173) [2022-11-25 15:55:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10450 states to 10450 states and 14303 transitions. [2022-11-25 15:55:31,778 INFO L78 Accepts]: Start accepts. Automaton has 10450 states and 14303 transitions. Word has length 357 [2022-11-25 15:55:31,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:55:31,779 INFO L495 AbstractCegarLoop]: Abstraction has 10450 states and 14303 transitions. [2022-11-25 15:55:31,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-25 15:55:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 10450 states and 14303 transitions. [2022-11-25 15:55:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-25 15:55:31,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:55:31,797 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:31,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 15:55:32,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:55:32,007 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:55:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:55:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1311137554, now seen corresponding path program 1 times [2022-11-25 15:55:32,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:55:32,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004479517] [2022-11-25 15:55:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:55:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:55:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:55:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:55:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:55:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:55:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:55:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:55:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:55:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:55:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:55:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:55:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:55:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:55:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:55:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:55:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:55:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:55:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:55:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:55:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-25 15:55:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 15:55:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 15:55:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 15:55:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:55:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-25 15:55:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:55:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 15:55:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-11-25 15:55:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-25 15:55:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:55:33,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004479517] [2022-11-25 15:55:33,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004479517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:55:33,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557491595] [2022-11-25 15:55:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:33,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:55:33,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:55:33,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:55:33,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:55:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:34,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2807 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 15:55:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:55:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-25 15:55:34,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:55:34,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557491595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:55:34,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:55:34,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 13 [2022-11-25 15:55:34,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321118799] [2022-11-25 15:55:34,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:55:34,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:55:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:55:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:55:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:55:34,721 INFO L87 Difference]: Start difference. First operand 10450 states and 14303 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-25 15:55:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:55:36,167 INFO L93 Difference]: Finished difference Result 20923 states and 28726 transitions. [2022-11-25 15:55:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:55:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 361 [2022-11-25 15:55:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:55:36,206 INFO L225 Difference]: With dead ends: 20923 [2022-11-25 15:55:36,207 INFO L226 Difference]: Without dead ends: 10502 [2022-11-25 15:55:36,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 439 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:55:36,232 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 0 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:55:36,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3095 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:55:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10502 states. [2022-11-25 15:55:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10502 to 10490. [2022-11-25 15:55:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10490 states, 8074 states have (on average 1.309512013871687) internal successors, (10573), 8315 states have internal predecessors, (10573), 1577 states have call successors, (1577), 694 states have call predecessors, (1577), 838 states have return successors, (2261), 1564 states have call predecessors, (2261), 1576 states have call successors, (2261) [2022-11-25 15:55:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 14411 transitions. [2022-11-25 15:55:37,729 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 14411 transitions. Word has length 361 [2022-11-25 15:55:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:55:37,729 INFO L495 AbstractCegarLoop]: Abstraction has 10490 states and 14411 transitions. [2022-11-25 15:55:37,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-25 15:55:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 14411 transitions. [2022-11-25 15:55:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-11-25 15:55:37,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:55:37,746 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:37,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:55:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 15:55:37,964 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:55:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:55:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash 533216757, now seen corresponding path program 1 times [2022-11-25 15:55:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:55:37,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830722739] [2022-11-25 15:55:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:37,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:55:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:55:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:55:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:55:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:55:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:55:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:55:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:55:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:55:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 15:55:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-25 15:55:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:55:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:55:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-25 15:55:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-25 15:55:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:55:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-25 15:55:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-25 15:55:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:55:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-25 15:55:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 15:55:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-11-25 15:55:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-25 15:55:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-25 15:55:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-11-25 15:55:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:55:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-11-25 15:55:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:55:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 15:55:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-11-25 15:55:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-25 15:55:39,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:55:39,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830722739] [2022-11-25 15:55:39,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830722739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:55:39,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:55:39,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 15:55:39,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160473463] [2022-11-25 15:55:39,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:55:39,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:55:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:55:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:55:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:55:39,013 INFO L87 Difference]: Start difference. First operand 10490 states and 14411 transitions. Second operand has 11 states, 11 states have (on average 17.0) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (37), 10 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-25 15:55:45,728 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 15:55:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:55:49,754 INFO L93 Difference]: Finished difference Result 24290 states and 33964 transitions. [2022-11-25 15:55:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:55:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (37), 10 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 367 [2022-11-25 15:55:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:55:49,808 INFO L225 Difference]: With dead ends: 24290 [2022-11-25 15:55:49,808 INFO L226 Difference]: Without dead ends: 13869 [2022-11-25 15:55:49,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:55:49,832 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1720 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 847 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:55:49,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 2187 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 2578 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-25 15:55:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13869 states. [2022-11-25 15:55:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13869 to 10850. [2022-11-25 15:55:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10850 states, 8434 states have (on average 1.3247569362105762) internal successors, (11173), 8675 states have internal predecessors, (11173), 1577 states have call successors, (1577), 694 states have call predecessors, (1577), 838 states have return successors, (2261), 1564 states have call predecessors, (2261), 1576 states have call successors, (2261) [2022-11-25 15:55:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10850 states to 10850 states and 15011 transitions. [2022-11-25 15:55:50,969 INFO L78 Accepts]: Start accepts. Automaton has 10850 states and 15011 transitions. Word has length 367 [2022-11-25 15:55:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:55:50,969 INFO L495 AbstractCegarLoop]: Abstraction has 10850 states and 15011 transitions. [2022-11-25 15:55:50,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (37), 10 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-25 15:55:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states and 15011 transitions. [2022-11-25 15:55:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-25 15:55:50,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:55:50,982 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:50,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 15:55:50,982 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:55:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:55:50,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1390684695, now seen corresponding path program 1 times [2022-11-25 15:55:50,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:55:50,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450187358] [2022-11-25 15:55:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:50,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:55:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:55:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:55:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:55:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:55:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:55:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:55:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:55:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:55:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:55:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:55:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:55:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 15:55:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-25 15:55:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-25 15:55:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 15:55:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:55:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:55:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-25 15:55:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 15:55:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 15:55:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-25 15:55:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 15:55:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-25 15:55:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-25 15:55:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:55:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-11-25 15:55:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:55:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:55:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:55:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 15:55:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-11-25 15:55:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-25 15:55:52,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:55:52,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450187358] [2022-11-25 15:55:52,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450187358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:55:52,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555081919] [2022-11-25 15:55:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:52,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:55:52,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:55:52,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:55:52,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:55:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:53,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 15:55:53,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:55:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-25 15:55:54,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:55:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-25 15:55:54,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555081919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:55:54,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:55:54,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 6] total 22 [2022-11-25 15:55:54,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608076471] [2022-11-25 15:55:54,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:55:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 15:55:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:55:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 15:55:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:55:54,351 INFO L87 Difference]: Start difference. First operand 10850 states and 15011 transitions. Second operand has 22 states, 22 states have (on average 13.227272727272727) internal successors, (291), 11 states have internal predecessors, (291), 3 states have call successors, (80), 10 states have call predecessors, (80), 4 states have return successors, (66), 6 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-25 15:56:03,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:56:06,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:56:07,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:56:09,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:56:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:56:23,383 INFO L93 Difference]: Finished difference Result 44990 states and 66124 transitions. [2022-11-25 15:56:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 15:56:23,383 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.227272727272727) internal successors, (291), 11 states have internal predecessors, (291), 3 states have call successors, (80), 10 states have call predecessors, (80), 4 states have return successors, (66), 6 states have call predecessors, (66), 3 states have call successors, (66) Word has length 374 [2022-11-25 15:56:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:56:23,462 INFO L225 Difference]: With dead ends: 44990 [2022-11-25 15:56:23,462 INFO L226 Difference]: Without dead ends: 34209 [2022-11-25 15:56:23,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 832 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1229, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 15:56:23,485 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 3343 mSDsluCounter, 17406 mSDsCounter, 0 mSdLazyCounter, 12321 mSolverCounterSat, 1643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3530 SdHoareTripleChecker+Valid, 19159 SdHoareTripleChecker+Invalid, 13964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1643 IncrementalHoareTripleChecker+Valid, 12321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:56:23,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3530 Valid, 19159 Invalid, 13964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1643 Valid, 12321 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2022-11-25 15:56:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34209 states. [2022-11-25 15:56:24,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34209 to 10970. [2022-11-25 15:56:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 8554 states have (on average 1.3202010755202245) internal successors, (11293), 8755 states have internal predecessors, (11293), 1577 states have call successors, (1577), 694 states have call predecessors, (1577), 838 states have return successors, (2261), 1604 states have call predecessors, (2261), 1576 states have call successors, (2261) [2022-11-25 15:56:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 15131 transitions. [2022-11-25 15:56:24,989 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 15131 transitions. Word has length 374 [2022-11-25 15:56:24,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:56:24,989 INFO L495 AbstractCegarLoop]: Abstraction has 10970 states and 15131 transitions. [2022-11-25 15:56:24,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.227272727272727) internal successors, (291), 11 states have internal predecessors, (291), 3 states have call successors, (80), 10 states have call predecessors, (80), 4 states have return successors, (66), 6 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-25 15:56:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 15131 transitions. [2022-11-25 15:56:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-25 15:56:25,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:56:25,001 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:25,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:56:25,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 15:56:25,213 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:56:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:56:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1731257059, now seen corresponding path program 2 times [2022-11-25 15:56:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:56:25,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624570815] [2022-11-25 15:56:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:56:25,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:56:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:56:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:56:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:56:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:56:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:56:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:56:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:56:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:56:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:56:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:56:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 15:56:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-25 15:56:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:56:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:56:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-25 15:56:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 15:56:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-25 15:56:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-11-25 15:56:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-25 15:56:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-25 15:56:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-25 15:56:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-25 15:56:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:56:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-11-25 15:56:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:56:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 15:56:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-11-25 15:56:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-25 15:56:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:56:26,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624570815] [2022-11-25 15:56:26,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624570815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:56:26,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:56:26,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 15:56:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018490067] [2022-11-25 15:56:26,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:56:26,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:56:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:56:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:56:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:56:26,682 INFO L87 Difference]: Start difference. First operand 10970 states and 15131 transitions. Second operand has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 4 states have internal predecessors, (198), 3 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-25 15:56:33,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:56:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:56:41,017 INFO L93 Difference]: Finished difference Result 23095 states and 32052 transitions. [2022-11-25 15:56:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:56:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 4 states have internal predecessors, (198), 3 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 386 [2022-11-25 15:56:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:56:41,043 INFO L225 Difference]: With dead ends: 23095 [2022-11-25 15:56:41,043 INFO L226 Difference]: Without dead ends: 12194 [2022-11-25 15:56:41,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:56:41,058 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1391 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 4286 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 4987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 4286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:56:41,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 2406 Invalid, 4987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 4286 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-25 15:56:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12194 states. [2022-11-25 15:56:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12194 to 11072. [2022-11-25 15:56:42,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11072 states, 8632 states have (on average 1.3193929564411493) internal successors, (11389), 8821 states have internal predecessors, (11389), 1595 states have call successors, (1595), 694 states have call predecessors, (1595), 844 states have return successors, (2303), 1640 states have call predecessors, (2303), 1594 states have call successors, (2303) [2022-11-25 15:56:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 15287 transitions. [2022-11-25 15:56:42,197 INFO L78 Accepts]: Start accepts. Automaton has 11072 states and 15287 transitions. Word has length 386 [2022-11-25 15:56:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:56:42,198 INFO L495 AbstractCegarLoop]: Abstraction has 11072 states and 15287 transitions. [2022-11-25 15:56:42,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 4 states have internal predecessors, (198), 3 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-25 15:56:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11072 states and 15287 transitions. [2022-11-25 15:56:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-25 15:56:42,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:56:42,208 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:42,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 15:56:42,208 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:56:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:56:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1883877562, now seen corresponding path program 1 times [2022-11-25 15:56:42,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:56:42,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578221574] [2022-11-25 15:56:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:56:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:56:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:56:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:56:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:56:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:56:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:56:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:56:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:56:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:56:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:56:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:56:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 15:56:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-25 15:56:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:56:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:56:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-25 15:56:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 15:56:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-25 15:56:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-11-25 15:56:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-25 15:56:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-11-25 15:56:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 15:56:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 15:56:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-25 15:56:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:56:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-25 15:56:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:43,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:56:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:43,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 15:56:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-25 15:56:43,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:56:43,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578221574] [2022-11-25 15:56:43,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578221574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:56:43,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331967394] [2022-11-25 15:56:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:56:43,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:56:43,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:56:43,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:56:43,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:56:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:44,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:56:44,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:56:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-25 15:56:44,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:56:44,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331967394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:56:44,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:56:44,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 13 [2022-11-25 15:56:44,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712695622] [2022-11-25 15:56:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:56:44,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:56:44,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:56:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:56:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:56:44,553 INFO L87 Difference]: Start difference. First operand 11072 states and 15287 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-25 15:56:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:56:46,176 INFO L93 Difference]: Finished difference Result 23321 states and 32126 transitions. [2022-11-25 15:56:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:56:46,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 392 [2022-11-25 15:56:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:56:46,199 INFO L225 Difference]: With dead ends: 23321 [2022-11-25 15:56:46,199 INFO L226 Difference]: Without dead ends: 12318 [2022-11-25 15:56:46,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:56:46,212 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 863 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:56:46,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1210 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:56:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12318 states. [2022-11-25 15:56:47,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12318 to 11526. [2022-11-25 15:56:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11526 states, 9036 states have (on average 1.3201637892872953) internal successors, (11929), 9223 states have internal predecessors, (11929), 1617 states have call successors, (1617), 718 states have call predecessors, (1617), 872 states have return successors, (2325), 1668 states have call predecessors, (2325), 1616 states have call successors, (2325) [2022-11-25 15:56:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11526 states to 11526 states and 15871 transitions. [2022-11-25 15:56:47,525 INFO L78 Accepts]: Start accepts. Automaton has 11526 states and 15871 transitions. Word has length 392 [2022-11-25 15:56:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:56:47,525 INFO L495 AbstractCegarLoop]: Abstraction has 11526 states and 15871 transitions. [2022-11-25 15:56:47,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-25 15:56:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 11526 states and 15871 transitions. [2022-11-25 15:56:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-25 15:56:47,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:56:47,536 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:47,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:56:47,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 15:56:47,749 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:56:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:56:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash 930366278, now seen corresponding path program 2 times [2022-11-25 15:56:47,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:56:47,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745547351] [2022-11-25 15:56:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:56:47,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:56:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:56:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:56:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:56:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:56:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:56:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:56:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:56:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:56:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:56:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:56:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 15:56:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-25 15:56:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:56:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:56:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-25 15:56:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 15:56:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-25 15:56:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-11-25 15:56:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-25 15:56:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 15:56:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 15:56:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 15:56:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-25 15:56:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:56:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:56:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-25 15:56:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:56:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:56:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:56:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 15:56:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:56:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2022-11-25 15:56:49,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:56:49,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745547351] [2022-11-25 15:56:49,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745547351] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:56:49,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313264047] [2022-11-25 15:56:49,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:56:49,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:56:49,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:56:49,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:56:49,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:56:50,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:56:50,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:56:50,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 15:56:50,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:56:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-25 15:56:50,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:56:50,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313264047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:56:50,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:56:50,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-25 15:56:50,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908121288] [2022-11-25 15:56:50,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:56:50,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:56:50,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:56:50,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:56:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:56:50,633 INFO L87 Difference]: Start difference. First operand 11526 states and 15871 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 7 states have internal predecessors, (194), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-25 15:56:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:56:59,358 INFO L93 Difference]: Finished difference Result 37146 states and 52158 transitions. [2022-11-25 15:56:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:56:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 7 states have internal predecessors, (194), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 392 [2022-11-25 15:56:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:56:59,419 INFO L225 Difference]: With dead ends: 37146 [2022-11-25 15:56:59,419 INFO L226 Difference]: Without dead ends: 25679 [2022-11-25 15:56:59,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-11-25 15:56:59,446 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1663 mSDsluCounter, 4918 mSDsCounter, 0 mSdLazyCounter, 3913 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 6248 SdHoareTripleChecker+Invalid, 4566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:56:59,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 6248 Invalid, 4566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3913 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 15:56:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25679 states. [2022-11-25 15:57:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25679 to 16096. [2022-11-25 15:57:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16096 states, 12682 states have (on average 1.3178520738053934) internal successors, (16713), 12902 states have internal predecessors, (16713), 2215 states have call successors, (2215), 1017 states have call predecessors, (2215), 1198 states have return successors, (2793), 2302 states have call predecessors, (2793), 2214 states have call successors, (2793) [2022-11-25 15:57:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16096 states to 16096 states and 21721 transitions. [2022-11-25 15:57:01,851 INFO L78 Accepts]: Start accepts. Automaton has 16096 states and 21721 transitions. Word has length 392 [2022-11-25 15:57:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:57:01,851 INFO L495 AbstractCegarLoop]: Abstraction has 16096 states and 21721 transitions. [2022-11-25 15:57:01,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 7 states have internal predecessors, (194), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-25 15:57:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 16096 states and 21721 transitions. [2022-11-25 15:57:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-25 15:57:01,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:57:01,864 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:01,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:57:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b97d9-8f4a-4d19-a2e3-95ac608e527f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 15:57:02,065 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:57:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:57:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1005751635, now seen corresponding path program 1 times [2022-11-25 15:57:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:57:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377689586] [2022-11-25 15:57:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:57:02,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:57:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:57:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:57:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:57:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:57:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:57:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:57:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:57:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:57:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:57:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:57:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 15:57:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-25 15:57:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:57:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:57:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-25 15:57:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 15:57:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-25 15:57:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-11-25 15:57:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-25 15:57:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 15:57:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 15:57:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 15:57:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-25 15:57:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:57:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-25 15:57:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 15:57:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:57:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-11-25 15:57:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-11-25 15:57:02,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:57:02,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377689586] [2022-11-25 15:57:02,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377689586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:57:02,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:57:02,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 15:57:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864999468] [2022-11-25 15:57:02,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:57:02,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:57:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:57:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:57:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:57:02,799 INFO L87 Difference]: Start difference. First operand 16096 states and 21721 transitions. Second operand has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 3 states have internal predecessors, (207), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-25 15:57:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:57:12,090 INFO L93 Difference]: Finished difference Result 34313 states and 47634 transitions. [2022-11-25 15:57:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:57:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 3 states have internal predecessors, (207), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 397 [2022-11-25 15:57:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:57:12,135 INFO L225 Difference]: With dead ends: 34313 [2022-11-25 15:57:12,135 INFO L226 Difference]: Without dead ends: 18286 [2022-11-25 15:57:12,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:57:12,162 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1217 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:57:12,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 1328 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-25 15:57:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18286 states. [2022-11-25 15:57:14,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18286 to 16096. [2022-11-25 15:57:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16096 states, 12682 states have (on average 1.315959627818956) internal successors, (16689), 12902 states have internal predecessors, (16689), 2215 states have call successors, (2215), 1017 states have call predecessors, (2215), 1198 states have return successors, (2793), 2302 states have call predecessors, (2793), 2214 states have call successors, (2793) [2022-11-25 15:57:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16096 states to 16096 states and 21697 transitions. [2022-11-25 15:57:14,694 INFO L78 Accepts]: Start accepts. Automaton has 16096 states and 21697 transitions. Word has length 397 [2022-11-25 15:57:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:57:14,695 INFO L495 AbstractCegarLoop]: Abstraction has 16096 states and 21697 transitions. [2022-11-25 15:57:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 3 states have internal predecessors, (207), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-25 15:57:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 16096 states and 21697 transitions. [2022-11-25 15:57:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-25 15:57:14,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:57:14,780 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:14,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 15:57:14,780 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:57:14,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:57:14,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1425857829, now seen corresponding path program 1 times [2022-11-25 15:57:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:57:14,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715770658] [2022-11-25 15:57:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:57:14,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:57:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:57:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:57:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:57:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:57:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:57:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:57:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:57:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:57:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 15:57:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:57:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 15:57:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-25 15:57:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:57:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:57:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-25 15:57:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 15:57:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-25 15:57:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-11-25 15:57:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:57:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-25 15:57:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 15:57:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 15:57:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-11-25 15:57:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-25 15:57:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:57:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:57:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-25 15:57:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 15:57:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:57:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-11-25 15:57:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:57:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:57:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-11-25 15:57:15,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:57:15,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715770658] [2022-11-25 15:57:15,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715770658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:57:15,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:57:15,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 15:57:15,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558912327] [2022-11-25 15:57:15,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:57:15,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:57:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:57:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:57:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:57:15,394 INFO L87 Difference]: Start difference. First operand 16096 states and 21697 transitions. Second operand has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-25 15:57:20,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:57:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:57:27,559 INFO L93 Difference]: Finished difference Result 33809 states and 46722 transitions. [2022-11-25 15:57:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:57:27,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 402 [2022-11-25 15:57:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:57:27,604 INFO L225 Difference]: With dead ends: 33809 [2022-11-25 15:57:27,604 INFO L226 Difference]: Without dead ends: 17782 [2022-11-25 15:57:27,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:57:27,635 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1423 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 3540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:57:27,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 1732 Invalid, 3540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-25 15:57:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17782 states.